HVAC Acronyms and Abbreviations

A – Air, Compressed Air, compressed air line, area
A/C – Air conditioning
ABC – Above ceiling
AC – Air Conditioning air chamber, alternating current
ACD – Automatic Control Damper
AD – Access Door
AF – Air Foil
AFF – Above finished floor
AFG – Above finished grade
AFUE – Annual Fuel Utilization Efficiency
AHU – Air Handling Unit
AL – Aluminum
AMB – Ambient
AMP – Ampere
AP – Access Panel
APD – Air Pressure Drop
ARR – Arrangement
AS – Air Stream
ATC – Automatic Temperature Control
ATM – Atmosphere
AUTO – Automatic
AUX – Auxiliary
AVG – Average
B & S – Bell and spigot
BBD – Boiler blowdown
BDD – Back-Draft Damper
BF – Boiler feed
BHP – Boiler horsepower, brake horsepower
BI – Backwards Inclined
BOD – Bottom of Duct
BOP – Bottom of pipe
BOT – Bottom
BP – Back pressure
BSMT – Basement
BTU – British Thermal Unit
BTUH – British Thermal Unit per Hour
BV – Butterfly valve
C – Condensate line
C to C – Center to center
CA – Compressed air
CAL – Calorie
CAP – Capacity
CD – Condensate drain
CENT – Center, Centrifugal
CF – Cubic Feet chemical feed, cubic foot
CFH – Cubic feet per hour
CFM – Cubic Feet per Minute
CH – Chilled, Chiller
CHW – Chilled Water
CHWR – Chilled Water Return
CHWS – Chilled Water Supply
CI – Cast iron
CIRC – Circular
CL – Center line
CM – Centimeter
CM2 – Square centimeter
CO – Clean out, Carbon Monoxide
COL – Column
CONC – Concrete, concentric
CONN – Connection, Connect
CONT – Continuation
CPVC – Chlorinated polyvinyl chloride
CR – Condenser return
CRW – Chemical resistant waste
CS – Condenser supply
CT – Cooling Tower
CTBD – Cooling Tower Blow Down
CTR – Center
CU – Cubic
CU FT. – Cubic feet
CU IN. – Cubic inches
CUH – Cabinet Unit Heater
CV – Check valve
CW – Cold water
CWR – Condenser Water Return, cold water riser
CWS – Condenser Water Supply
D – Drain, Deep
DB – Dry Bulb {Reference to Temperature}
DDC – Direct Digital Control
DEG – Degree
DELTAT – Temperature difference, Delta Temperature
DET – Detail
DIA – Diameter
DIM – Dimension
DISC – Disconnect
DN – Down
DP – Differential Pressure, Dew point temperature
DR – Drain
DWG – Drawing
E to C – End to center
EA – Each, Exhaust Air
EAHU – Exhaust Air Handling Unit
EAT – Entering Air Temperature
EATR – Exhaust Air Transfer Ratio
EER – Energy efficient ratio
EF – Exhaust Fan
EFF – Efficiency
EJ – Expansion joint
EL – Elevation
ELB – Elbow
ELEC – Electrical
EMER – Emergency
EMS – Energy Management System
ENT – Entering
ERV – Energy Recovery Ventilator
ESP – External Static Pressure
ET – Expansion Tank
EUH – Electrical Unit Heater
EVAP – Evaporator
EWT – Entering Water Temperature
EXH / EX – Exhaust
EXP – Expansion
EXST – existing
EXT – External
F – Fahrenheit
FA – Free Area, Fire Alarm
FC – Flexible Connection, flexible connection
FCO – Floor clean out
FCU – Fan Coil Unit
FD – Floor Drain, Fire Damper, Fire Department
FDW – Feed water
FEC – Fire extinguisher cabinet
FF – Finish floor

FG – Finish grade
FHC – Fire hose cabinet
FLA – Full Load Amps
FLEX – Flexible
FLR – Floor
FLRDR – Floor Drain
FM – Flow meter
FO – Fuel oil
FOV – Flush out valve
FPM – Feet per Minute
FPS – Feet per Second
FRP – Fiberglass Reinforced Plastic
FS – Flow Switch, federal specs
FT – Feet, Foot
FTG – Fitting
FTR – Fin Tube Radiation
FU – Fixture unit
FV – Flush valve
G – Gas, Gram, gas line
GA – Gauge
GAL – Gallons
GALV – Galvanized
GFU – Glycol Feed Unit
GL.V – Globe valve
GND – Ground
GPD – Gallons per day
GPH – Gallons per Hour
GPM – Gallons per Minute
GPS – Gallons per second
GR – Grade, Grain
GV – Gate valve
GWH – Gas water heater
H2O – Water
HB – Hose Bib (Connection)
HD – Head
Hg – Mercury
HGT – Height
HMD – Humidity
HORIZ – Horizontal
HP – Horsepower, High Point
HR – Hour
HRU – Heat Recovery Unit
HRV – Heat Recovery Ventilator
HTD – Heated
HTG – Heating
HTR – Heater
HVAC – Heating Ventilation and Air Conditioning
HW – Hot water
HWH – Hot water heater
HWR – Hot water return, hot water riser
HWS – Hot water supply
HWT – Hot water tank
HZ – Hertz (Cycles per Second)
ID – Inside Diameter
IN – Inches
IN. – Inch
INHg – Inches of mercury
INSUL – Insulation
INT – International
INTL – Internal
IPS – Iron pipe size
IV – Indirect vent
IW – Indirect waste
J – Joule
K – Kelvin
KG – Kilogram
KM – Kilometer
KM2 – Kquare kilometer
KPA – Kilo pascal
KS – Kitchen sink
KW – Kilowatt
L – Length, liter
LAT – Leaving Air Temperature
LB – Pound
LB. – Pound
LBF – Pound
LD – Linear Diffuser
LF – Linear Feet
LIQ – Liquid
LP – Low Point, Low Pressure
LRA – Locked Rotor Amps
LUVR / LVR – Louver
LVDR – Louvered Door
LVG – Leaving
LVL – Level
LVR – Louver
LWT – Leaving Water Temperature
M – Meter
M TYPE – Lightest type of rigid copper pipe
M2 – Square meter
MAN – Manual
MAT – Mixed air temperature
MAX – Maximum
MBH – 1000 BTUH, Thousand British thermal units per hour
MCA – Minimum Circuit Amps
MECH – Mechanical
MFR – Manufacturer
MG – Milligram
MGD – Millions gallons per day
MIN – Minimum, Minute
ML – Milliliter
MM – Millimeter
MM3 – Cubic millimeter
MPT – Male pipe thread
MTD – Mounted
MU – – Make-Up Water
MUA – – Make-Up Air
NA – Not applicable
NC – Noise Criteria, Normally Closed
NEG – Negative
NIC – Not in contact
NO – Normally Open
NOM – Nominal
NPHP – Name plate horsepower
NPS – Nominal pipe size
NPSH – Net positive suction head
NTS – Not to scale
O – Oxygen
OA – Outside Air
OAI – Outside Air Intake
OAT – Outside temperature
OC – On Center
oC – Degrees Celsius
OD – Outside Diameter
ODP – Open Drip Proof

OED – Open end duct
oF – Degrees Fahrenheit
OF – Overflow
OV – Outlet Velocity
OZ. – Ounce
PA – Pascal
PC – Plumbing contractor
PCF – Pounds per Cubic Foot
PCR – Pumped condensate return
PD – Pressure Drop
PF – Power factor
PG – Pressure gauge
PH – Phase
PL – Plate
PNEU – Pneumatic
PRESS – Pressure
PROP – Propeller
PRV – Pressure Reducing Valve
PSI – Pounds per Square Inch
PSIA – Pounds per Square Inch -Absolute
PSID – Pounds per Square Inch -Differential
PSIG – Pounds per Square Inch -Gauge
PV – Plug valve
PVC – Polyvinyl Chloride
QTY – Quantity
R – Radius
R/E – Return and exhaust
RA – Return Air
RAD – Radius
RAT – Return air temperature
RD – Roof drain
RECOV – Recovery
RED – Reducer
REF – Reference
REQD – Required
RET – Return
REV – Revision
RH – Relative Humidity
RL – Refrigerant liquid
RLA – Running Load Amps, Rated Load Amperes
RLF – Relief
RM – Room
RPM – Revolutions per Minute
RS – Refrigerant suction
RTN – Return
RTU – – Roof-Top Unit
RV – Relief valve
S – Switch
SA – Supply Air, Shock absorber
SAT – Supply air temperature
SCH – Schedule
SCR – Screen
SCT – Saturated Condensing Temperature
SD – Smoke Detector, Smoke Damper
SDT – Saturated discharge temperature
SE – Smoke Exhaust
SEC – Seconds, secondary
SEER – Seasonal Energy Efficiency Ratio
SEN / SENS – Sensible
SEP – Separate
SEQ – Sequence
SER – Series
SERV – Service
SF – Square Feet, Service factor
SFD – Combination Smoke / Fire Damper
SHC – Sensible Heat Capacity
SHT – Sheet
SI – International systems of units
SOL – Solenoid
SP – Static Pressure
SPEC – Specification
SPLY – Supply
SQ. – Square
SQ.FT. – Square feet
SS – Stainless Steel
SSH – Static suction head
SST – Saturated suction temperature
STD – Standard
STH – Static total head
STL – Steel
SUCT – Suction
SUP – Supply
SV – Service
SVH – Static velocity head
SW – Service weight
SWS – Service water
T – Temperature, Thermostat
TD – Temperature difference
TDH – Total dynamic head
TEFC – Totally Enclosed Fan Cooled
TEMP – Temperature
TH – Thermometer
THK – Thick
TON – 12,000 BTUH {Cooling Capacity}
TP – Total pressure
TSP – Total Static Pressure
TSTAT – Thermostat
TYP – Typical
UC – Undercut {Door}
UF – Under floor
UH – Unit heater
V – Volts, Vent, Volume
VAC – Vacuum
VAV – Variable Air Volume
VB – Vacuum breaker
VCI – Vacuum cleaning inlet
VCL – Vacuum cleaning line
VD – Volume Damper
VEL – Velocity
VERT – Vertical
VFD – Variable Frequency Drive
VIB – Vibration
VOL – Volume
VP – Velocity pressure
VSD – Variable speed drive
VTR – Vent through roof
W – Watt, width, wide
WB – Wet Bulb Temperature
WC – Water Column
WCO – Wall clean out
WG – Water Gauge
WH – Water heater
WPD – Water Pressure Drop
WTD – Water Temperature Difference

HVAC Acronyms and Abbreviations – Information

The Heating and Cooling industry aka HVAC or “Heating Ventilation and Air Conditioning” has a lot of acronyms and abbreviations.  You may hear an acronyms or abbreviation when looking into a new system, see the acronyms or abbreviation on a sticker or unit and wonder what that means. 

Knowing the acronyms and Abbreviations for HVAC terms can help you when deciding on a new system, an upgrade or understanding Air Conditioning or Furnace terms printed on you system.  We are glad to help with and questions you may have about Heating and Cooling systems.

We would like to help you with a list of related HVAC acronyms and abbreviations with links to other pages on our site to give even more information how the industry is using the term!

Special Financing

Learn about our HVAC financing options available to our customers!

Maryland HVAC Service Areas

Maryland’s Trusted Heating & Air Conditioning Repair Company

Grove Heating and Cooling is a Maryland HVAC company that proudly serves Anne Arundel, Prince George’s, Howard, Montgomery, and Queen Anne’s counties. Maryland residents have trusted us for over ten years to keep their heating and air conditioning systems running smoothly and their homes comfortable all year long.

Annapolis

Providing quality residential and commercial HVAC service to the residents of Annapolis.

Bowie

See why so many residents in Bowie trust Grove Heating & Cooling for their home comfort needs.

Crofton

Dependable HVAC service for the residents and business owners of Crofton.

Davidsonville

Davidsonville residents know who to trust their HVAC repair needs with.

Elkridge

The residents of Elkridge trust Grove Heating & Cooling for their home comfort.

Odenton

Reliable heating and air conditioning services available to our neighbors in Odenton.

Severn

Severn residents know who to count on for their HVAC service needs.

Lake Shore

The only HVAC company Lake Shore residents call is Grove Heating & Cooling.

Millersville

Millersville residents know who to count on for their HVAC service needs.

Silver Spring

Silver Spring residents know who to count on for their HVAC service needs.

Annapolis Neck

The only HVAC company Annapolis Neck residents call is Grove Heating & Cooling.

Cape St. Claire

The only HVAC company Cape St. Claire residents call is Grove Heating & Cooling.

Fulton

The only HVAC company Fulton residents call is Grove Heating & Cooling.

Grasonville

The only HVAC company Grasonville residents call is Grove Heating & Cooling.

Herald Harbor

The only HVAC company Herald Harbor residents call is Grove Heating & Cooling.

Largo

The only HVAC company Largo residents call is Grove Heating & Cooling.

Marlboro Meadows

The only HVAC company Marlboro Meadows residents call is Grove Heating & Cooling.

Marlton

The only HVAC company Marlton residents call is Grove Heating & Cooling.

Mellwood

The only HVAC company Mellwood residents call is Grove Heating & Cooling.

Queen Anne Estates

The only HVAC company Queen Anne Estates residents call is Grove Heating & Cooling.

Rosaryville

The only HVAC company Rosaryville residents call is Grove Heating & Cooling.

Arnold

Providing quality residential and commercial HVAC service to the residents of Arnold.

Columbia

Columbia residents know who to trust their HVAC repair needs with.

Crownsville

Crownsville residents know who to trust their HVAC repair needs with.

Edgewater

The residents of Edgewater trust Grove Heating & Cooling for their home comfort.

Ellicott City

Affordable HVAC services to all residents and businesses in Ellicott City.

Gambrills

Affordable HVAC services to all residents and businesses in Gambrills.

Laurel

Affordable HVAC services to all residents and businesses in Laurel.

Pasadena

Quality service at a fair price is what Pasadena residents can expect from us.

Severna Park

The only HVAC company Severna Park residents call is Grove Heating & Cooling.

Upper Marlboro

The only HVAC company Upper Marlboro residents call is Grove Heating & Cooling.

Arden on the Severn

The only HVAC company Arden on the Severn residents call is Grove Heating & Cooling.

College Park

The only HVAC company College Park residents call is Grove Heating & Cooling.

Glen Burnie

The only HVAC company Glen Burnie residents call is Grove Heating & Cooling.

Hardesty

The only HVAC company Hardesty residents call is Grove Heating & Cooling.

Lake Arbor

The only HVAC company Lake Arbor residents call is Grove Heating & Cooling.

Leeland

The only HVAC company Leeland residents call is Grove Heating & Cooling.

Marlboro Village

The only HVAC company Marlboro Village residents call is Grove Heating & Cooling.

Mayo

The only HVAC company Mayo residents call is Grove Heating & Cooling.

North Laurel

The only HVAC company North Laurel residents call is Grove Heating & Cooling.

Riva

The only HVAC company Riva residents call is Grove Heating & Cooling.

Westphalia

The only HVAC company Westphalia residents call is Grove Heating & Cooling.

Our Primary Service Areas

We recently expanded our HVAC service and repair to include the following areas:

  • Anne Arundel County
  • Prince George’s County
  • Howard County
  • Montgomery County
  • Queen Anne’s County

If you live in Maryland but outside these counties, please call 410-881-2451 to find out if we can provide service.

Special Financing

We offer financing to help you when you need it most.

HVAC Financing Options

Benefits to HVAC Financing

Owning a home is expensive! When your HVAC system breaks down unexpectedly and it makes more sense to replace it than repair it, it can be a significant, unplanned expense. Luckily, Grove works closely with Wells Fargo Bank, N.A. to offer payment plans and financing options that work for you.

Monthly Payments

Manage financing for your Grove purchase with Wells Fargo Bank, N.A. Split the total into payments that work for you, and you’ll be able to enjoy your new, efficient HVAC unit without breaking the bank with one big payment.

Flexible Financing Options

No need to corner yourself into a set plan, find one that works for you! Our financing plans offers flexibility based on what you can manage

Easy Online Account Management

Wells Fargo Bank, N.A. offers Grove customers an easy-to-use online portal with the ability to manage your account and pay your bill how you’d like.

Our HVAC Finance Provider

The Wells Fargo Home Projects credit card is issued with approved credit by Wells Fargo Bank, N.A. an Equal Housing Lender. 

Tax Rebates & Incentives

Many utility providers and local governments care about your energy efficiency, as well as our environment. Check with your local energy provider to see if they offer rebates or incentives when you upgrade to more energy-efficient air conditioners, geothermal heat pumps, traditional heat pumps, or ductless units. 

You may also be able to claim the installation of more energy-efficient equipment for a tax credit on your income taxes. Check with your tax professional for details. In the interim, Grove is happy to provide you with whatever paperwork or documentation you need to apply.

Air Conditioning Repair

Maryland’s Trusted AC Repair Company

When it gets hot outside, the last thing you want is to be stuck in it when you should be comfortable in your home. If you need a repair for your air conditioning system, trust the HVAC experts at Grove Heating & Cooling. Our professional Maryland air conditioner service company can fix all makes and models of air conditioners.

You can count on us any time of day or night for exceptional and affordable air conditioning repair that is guaranteed. We back every job we take on with great service, whether it be air conditioning repairs, installations, or replacements. Our certified AC repair technicians are experienced and trained to handle any air conditioner repair and will resolve your issues today!

With family values at the core of our air conditioning services, we are happy to say that most of our new customers become life-long clients. Our years of experience, customer service, and commitment to ongoing training make us a great partner. We work with you to ensure your home’s air conditioning equipment is consistently producing a comfortable environment for your family.

24-Hour Air Conditioning Repair Emergency Service

No one can predict precisely when heating and cooling systems will fail. Unfortunately, many HVAC contractors only offer limited hours and take days—or longer—to send an HVAC technician to your house. This kind of slow service is more than just an annoyance; it puts you at risk during humid Maryland summers.

Grove Heating & Cooling is ready for your emergency service call. We’ve made our name as one of the fastest, most reliable, 24-hour AC repair companies. Year after year, our 5-star service continues to win awards and get top customer reviews.

Don’t settle for grumpy technicians, lousy service, or slow air conditioning repairs from other HVAC companies. Get Grove on it fast!

Common AC Problems Which Need Repair

Many times, homeowners don’t know when it’s time to pick up the phone and call for an HVAC contractor to inspect their cooling system. If you are unsure of the severity of your air conditioning problems, these are a few situations that require an experienced repair or service technician, so go ahead and give us a call if you notice any of the following issues:

  • AC doesn’t turn on at all, and there’s no sign of life
  • AC unit makes noise, but no air comes out of the vents
  • AC runs continuously, or on a random schedule not programmed by you
  • Not all rooms are cooled evenly
  • Poor indoor air quality throughout the home
  • The thermostat doesn’t work properly
  • AC is leaking water or refrigerant
  • Energy costs are climbing with no explanation

If you want to take measures and protect not only your air conditioning system but also the comfort and safety of your home, then it’s important not to ignore any repairs that need to be made. You’ll not only thank yourself in the long run, but your unit will last quite a long time and will indeed live up to its investment value.

Do you think you are experiencing any of these common air conditioner problems? Schedule quality air conditioning repair service with Grove today! We can help you with cooling solutions such as:

  • Compressor replacement
  • Refrigerant leak and recharge
  • Fan belt replacement
  • Fan blade replacement
  • Blower motor replacement
  • Electrical components repairs
  • And much more!

What to Try Before You Call Us for Air Conditioning Repair

When your AC is not cooling, it’s time to do some simple AC troubleshooting. First, check that the power is on, then check that the thermostat is set to the “cooling” function (this wording will vary depending on the type of unit). Manual thermostats will usually have a physical switch, while a digital thermostat will have a screen where the setting may be text or an icon.

For a single-home residential air conditioning or heat pump system, the outdoor unit is generally on the ground and is another place to conduct your basic troubleshooting. The area around the condenser unit should be clear of any vegetation or debris. Clean this away to see if the temperature inside your home changes. If not, you should call Grove Heating & Cooling to schedule AC repair.

Clear, Honest Diagnoses and the Best Options for Your AC Repair

We understand how frustrating it can be when your air conditioning system stops working. Our experienced technicians take a thorough and careful approach to diagnosing your AC issues.

When we arrive at your home, we’ll start by performing a comprehensive inspection of your system, checking everything from the thermostat settings to the refrigerant levels, air filters, condenser coils, and electrical components. Our goal is to identify the root cause of the problem, ensuring that we address the issue accurately and efficiently.

Once we’ve diagnosed the issue, we take the time to explain our findings to you in clear, easy-to-understand terms. We believe in transparency, so you won’t ever feel left in the dark about what’s wrong with your system. After we’ve explained the problem, we’ll present you with all your available repair options, including any necessary parts, potential costs, and how each option will restore comfort to your home.

In some cases, if your system is old or the cost of repairs is high, we may recommend replacing the air conditioner instead of repairing it. This is often the best choice if the unit is inefficient, frequently breaking down, or nearing the end of its lifespan. Our team will help you weigh the long-term benefits of installing a new air conditioner, such as improved energy efficiency and reduced repair costs, so you can make the most informed decision for your home and budget.

Whether it’s a simple fix, a component replacement, or a new air conditioning installation, we’ll make sure you’re comfortable and confident in the solution we recommend.

Special Financing

Need help with the cost of your HVAC service? Not a problem!

Preventive Maintenance Service for AC Systems

Your air conditioner runs at its best when the unit is well-maintained. Keep your system running at peak efficiency as long as possible with preventive air conditioning tune up services. We provide comprehensive inspections, cleanings, and tests with every AC tune up.

To make it easy and cost-effective, we offer multiple levels of home maintenance plans to fit your budget. These plans include annual or biannual maintenance inspections for your home’s heating system and cooling equipment, priority scheduling, discounts, and other perks. Ask your heating, air conditioning, and indoor air quality technician about joining today!

Get AC Service in Maryland

Grove Heating & Cooling is a local heating and cooling company that proudly serves Anne Arundel, Prince George’s, Howard, Montgomery, and Queen Anne’s counties. We are committed to providing superior air conditioning repair services to homeowners in these areas so your home stays cool and comfortable.

Whether you’re in the heart of Annapolis, MD, the suburbs of Bowie, or any of the surrounding communities, our team is ready to provide fast, reliable, and affordable solutions for all your AC repair needs. We take pride in being your trusted local experts, offering personalized service and unmatched attention to detail.

AC Repair FAQs

Why is my AC not cooling properly?

If your air conditioner is running but not cooling your home effectively, several issues could be at play. A dirty air filter or blocked condenser coils on the outdoor unit could make it harder for the system to cool your home. Low refrigerant levels due to a leak can impact your AC’s ability to absorb and expel heat. Other possible causes include a malfunctioning thermostat, a failing compressor, or blocked vents preventing proper airflow. If troubleshooting basic issues like filter replacement and thermostat settings doesn’t help, it’s best to have Grove Heating & Cooling inspect the system. 

What is the common fault of an air conditioner?

One of the most common faults in air conditioners is a refrigerant leak. Refrigerant transfers heat to cool the home, and when levels drop due to a leak, the system struggles to maintain the desired temperature. Other frequent issues include dirty or frozen evaporator coils, clogged condensate drains that cause water leaks, and electrical problems such as faulty capacitors or relays that prevent the compressor or fan from running. Regular maintenance can help prevent many of these problems or catch and correct them early so the system runs smoothly.

What is the first thing to check when the AC stops working?

If your air conditioner suddenly stops working, the first thing to check is the thermostat. Make sure it is set to “cool” and the set temperature is lower than the current room temperature. If the thermostat appears to be working correctly, check the circuit breaker to see if the AC unit has tripped it, and reset the breaker if needed. If power isn’t the issue, inspect the air filter and replace it if it is clogged, and check the outdoor unit to see if there’s any visible debris or dirt blocking the fan. If none of these issues seem to be the cause, contact Grove Heating & Cooling to diagnose the problem. 

Can you clean AC coils without removing?

Yes, you can clean AC coils without removing them, and regular cleaning can improve efficiency and help your air conditioner last longer. For the indoor evaporator coils, turn off the system and use a soft brush or a no-rinse coil cleaner to remove dust and buildup. For outdoor condenser coils, you can use a garden hose to gently rinse away dirt, being careful not to bend the fins. If the coils have heavy grime or grease buildup, a specialized coil cleaning solution can be applied by one of our air conditioning maintenance technicians. 

How do I know if my AC evaporator coil is dirty?

Common signs of a dirty evaporator coil include weak airflow from vents, longer cooling cycles, warm air instead of cool air, and excessive moisture or ice buildup on the coil. If you notice an unusual musty odor when the air conditioner runs, it could indicate mold or mildew growth on the coil. If you suspect your evaporator coil is dirty, cleaning it or scheduling professional maintenance can improve cooling performance.

How do you tell if your AC fuses are blown? 

If your air conditioner suddenly stops working, a blown fuse could be the cause. Some common signs include the AC not turning on at all, the outdoor unit being unresponsive while the indoor fan continues running, or the thermostat display going blank. You may also notice a humming noise from the outdoor unit, which can indicate an electrical issue. Since testing and replacing fuses involve handling electrical components, contact Grove Heating & Cooling to safely diagnose the issue and replace blown fuses or fix other issues if needed. 

Should I turn off AC if it’s not cooling?

Yes, if your air conditioner runs but it’s not cooling your home properly, turning it off is a good idea to prevent further damage. Running the system under strain can cause additional problems, including compressor failure. Turning it off allows the system to defrost if ice buildup is present and prevents the risk of overheating components. After shutting it down, check for simple issues like a clogged air filter or blocked vents. If this troubleshooting doesn’t fix the problem, scheduling professional air conditioning repair is the best course of action.

Why is my outside AC unit not working but inside is?

If your indoor air handler runs but the outdoor unit doesn’t, several issues could be causing the problem. A tripped breaker or a blown fuse could stop power from reaching the outdoor unit. A capacitor may be bad, which helps start the compressor and fan motor. Another common issue is a faulty contactor, which controls the electrical connection between indoor and outdoor components. For these issues, professional AC repair is recommended to diagnose and fix the underlying cause.

Trust Grove to Return Your Home to Comfort

Our heating and cooling service company is equipped with the tools needed to perform complete and reliable air conditioning repairs. This includes the latest diagnostic tools to assess your HVAC system to find the problem and the parts needed to complete the repair.

We stock a variety of air conditioner replacement parts for all major brands to prevent repair delays. Our cooling company also provides exceptional installation and replacement services for AC units.

Don’t delay! Call Grove today to schedule your air conditioning repair appointment!

Customer Reviews

star star star star star
5star

The team at Grove is outstanding. Our family has used them for years. Every time we use them, they UP their game. Customer service is well trained and thorough. The technicians do great did work and the repairs were completed on time and at the agreed upon price.

– Bruce S.
5star

Our AC stopped working on a Saturday. We called around to a lot of places and they couldn’t get anyone out until Monday or Tuesday. Grove scheduled us for an “anytime” appointment with the promise that someone would call us 15-20 minutes before they arrived. He did the repair and gave us some suggestions for maintenance as well. He was professional and personable. We will be signing up for a service plan with Grove as soon as possible!

– Crystal H.
5star

Thank you for your quick response to our AC going out yesterday afternoon. Austin was great! He fixed the problem quickly by replacing a part and had the unit up and cooling again in no time! Grove Heating and Cooling came through again!! I will continue to recommend to everybody I know!

– Susie S.

MARYLAND HVAC SERVICE YOU CAN TRUST

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Heating, Cooling and Ventilation Experts in Bowie, Crofton, Annapolis, and Surrounding Areas

Grove Heating and Cooling is the top-rated HVAC company in Maryland. At Grove, our goal is to earn your trust and become your first choice for all of your furnace, air conditioning, heat pump, and indoor air quality service needs. Whether you need furnace repair, AC maintenance, or a new geothermal system quote, we’re ready to assist.

Special Offers

Check out our latest special offers and save today on service.

Financing

Take advantage of convenient HVAC financing options.

Air Conditioner Repair Service

Trust Grove to provide professional ac repair in Crofton, MD and the surrounding areas.

Heat Pump Repair Service

Reliable heat pump repair services anytime day or night.

Air Conditioning Installation

Looking to upgrade your air conditioner? We can help!

Indoor Air Quality

Make sure your home’s air is safe and clean to protect your family.

Skip the Service Call Fee

Service call fees are often made up for later with higher repair costs. Why pay just to have someone show up when you can put that money toward real value? Join Grove’s Premium Maintenance Plan and your service call is covered, plus get 15% off any repairs. Don’t stop at fixing today’s problem—membership sets you up for long-term savings with routine maintenance and priority care.

Customer Reviews

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5star

Two things that really impressed me with this company: they let me borrow two air conditioner window units until they were able to install my system and they sent me a tin of gourmet cookies as a thank you gift for shopping with them! Thank you Grove for taking care of my heating and cooling need!

– Brenda G.
5star

This company was so prompt and professional at handling my emergency situation of no heat! I can’t recommend them enough to fellow residents of Anne Arundel county. Not only was the company great, but my technician Austin was outstanding!

– Gia C.
5star

Professional and honest. We initially thought we had an A/C issue as it abruptly stopped working. The technician, Mike, inspected our unit and quickly came to the correct conclusion that it was an electrical wiring issue rather than the A/C unit itself. Called an electrician and all is working great now. Thanks to their honesty and courtesy, I will definitely call Grove if/when a heating and/or cooling issue arises in the future.

– Nasim N.

Our Story

Grove Heating and Cooling specializes in designing, engineering and installing complete comfort systems for homeowners and commercial property owners. Gary, his sons and a team of trained professionals bring over 50 years of experience in the HVAC industry, offering unmatched quality, exceptional customer service and family-like treatment to all our customers.

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