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Air Conditioning Contractors in Maryland

434 zip codes with active providers out of 466 total (93.1% coverage). Ranked #29 of 45 states by avg bid.

State Avg

$89.83

National Avg

$116.57

Coverage

93.1%

vs National

-22.9%

State vs National Average

Maryland: $90-22.9% vs National Avg

Dashed line = National Avg ($117)

AC Repair & HVAC Costs in Maryland

Typical cost range: $150–$500 for repairs; $4,000–$12,000 for system replacement

AC diagnostic and minor repair$150–$400

Refrigerant recharge (R-410A)$200–$600

Capacitor or contactor replacement$150–$350

Blower motor replacement$400–$800

Central AC system replacement (3-ton)$4,500–$9,000

Full HVAC system (AC + furnace)$7,000–$15,000

When to Hire a AC Repair & HVAC

Emergency service available in most areas

•Your AC is blowing warm air despite the thermostat being set correctly — likely a refrigerant, compressor, or capacitor issue

•The system runs constantly but can't reach the set temperature, driving up your energy bills

•You hear unusual sounds like grinding, banging, or screeching that weren't there before

•Water is pooling around the indoor unit, which can mean a clogged condensate drain or frozen evaporator coil

What to Look For

EPA Section 608 certification for refrigerant handling — this is federally required, not optional

NATE certification (North American Technician Excellence) — the gold standard for HVAC technicians

Factory authorization from the equipment brands they install, which enables better warranty coverage

A thorough diagnostic process — a good tech doesn't just top off refrigerant without finding the leak

Common AC Repair & HVAC Problems in Maryland

Refrigerant leaks that cause the system to blow warm air and the evaporator coil to freeze over

Failed capacitors — one of the most common AC repairs, causing the compressor or fan to not start

Clogged condensate drain lines that cause water backup and potential water damage

Dirty evaporator or condenser coils that reduce efficiency by 20–40%

Thermostat malfunctions or miscalibration causing uneven temperatures and short-cycling

Worn blower motors that reduce airflow and strain the entire system

Questions to Ask Before Hiring a AC Repair & HVAC in Maryland

“If I need refrigerant added, will you find and fix the leak, or just recharge?”

AC systems are sealed — if they're low on refrigerant, there's a leak. Just adding refrigerant without fixing the leak means you'll pay again in a few months. It's also environmentally irresponsible.

“If I need a replacement, will you perform a Manual J load calculation to size the new system?”

An oversized system short-cycles (turns on and off frequently), wastes energy, and fails to dehumidify properly. An undersized system runs constantly. Proper sizing requires a calculation, not just matching what you had before.

“What SEER2 rating do you recommend, and what's the payback period at a higher efficiency?”

Higher-efficiency systems cost more upfront but save on energy bills. A good technician can estimate your annual savings so you can make an informed decision rather than just buying the cheapest or most expensive option.

“What does your maintenance plan include, and is it worth it for my system?”

Annual maintenance extends equipment life and catches problems early. But some plans are overpriced for what they include. A good plan covers a thorough spring and fall tune-up, priority scheduling, and a discount on repairs.

Red Flags When Hiring a AC Repair & HVAC

✖Recommends system replacement without performing any diagnostics on your current system — sometimes a $300 repair can extend your system's life by years
✖Sizes a new system based on square footage alone without a load calculation — this is lazy and leads to improperly sized equipment
✖Doesn't pull a permit for new installations — HVAC installations require permits and inspections in most jurisdictions
✖Quotes a price significantly below competitors for a system replacement — they may be cutting corners on installation quality, ductwork, or using a stripped-down equipment model

DIY vs Hiring a Professional AC Repair & HVAC

You can and should change your air filter monthly during cooling season, keep the outdoor condenser unit clear of debris and vegetation (2 feet of clearance on all sides), clean the condensate drain line with vinegar, and program your thermostat properly. But refrigerant work, electrical repairs, compressor replacement, and system installation are strictly professional territory. Refrigerants require EPA certification to handle, and improper electrical work on a 240V system is both dangerous and illegal.

AC Repair & HVAC Safety Tips

Never attempt to recharge refrigerant yourself — it's illegal without EPA certification, and overcharging can damage the compressor (a $1,500+ repair)
If you smell a chemical or sweet odor near your indoor unit, it may be a refrigerant leak — ventilate the area and call a technician, as some refrigerants can displace oxygen in enclosed spaces
Turn off the system immediately if you see ice on the refrigerant lines or hear the compressor making a grinding noise — running it further can destroy the compressor

Best Time to Hire a AC Repair & HVAC in Maryland

HVAC companies are overwhelmed from June through August — everyone calls when the first heat wave hits. Schedule your annual maintenance in April or May when techs have availability and companies often run spring tune-up specials ($80–$120). If your system is aging, schedule a replacement consultation in late winter or early spring for the best pricing and installation availability.

AC Repair & HVAC Licensing in Maryland

HVAC contractors need both a state contractor license (requirements vary) and EPA Section 608 certification for any refrigerant work. Many states also require specific HVAC or mechanical contractor licenses. NATE certification is voluntary but indicates a higher standard of competency. Always verify licensing through your state's contractor board.

City-by-City Costs (288 cities)

City	Avg Bid	Max Bid	Min Bid	Zip Codes
Severna Park	$180.00	$180.00	$180.00	1
Elk Mills	$170.00	$170.00	$170.00	1
Simpsonville	$130.00	$130.00	$130.00	1
Sparrows Point	$130.00	$130.00	$130.00	1
Severn	$130.00	$130.00	$130.00	1
Savage	$130.00	$130.00	$130.00	1
Crownsville	$130.00	$130.00	$130.00	1
Columbia	$130.00	$130.00	$130.00	3
Glenelg	$130.00	$130.00	$130.00	1
Middle River	$130.00	$130.00	$130.00	1
Glenwood	$130.00	$130.00	$130.00	1
Hanover	$130.00	$130.00	$130.00	1
Highland	$130.00	$130.00	$130.00	1
Jessup	$130.00	$130.00	$130.00	1
Odenton	$130.00	$130.00	$130.00	1
Lisbon	$130.00	$130.00	$130.00	1
Linthicum Heights	$130.00	$130.00	$130.00	1
Cooksville	$130.00	$130.00	$130.00	1
Millersville	$130.00	$130.00	$130.00	1
Nottingham	$130.00	$130.00	$130.00	1
Parkville	$130.00	$130.00	$130.00	1
Riva	$130.00	$130.00	$130.00	1
Annapolis Junction	$130.00	$130.00	$130.00	1
Dayton	$130.00	$130.00	$130.00	1
Ellicott City	$130.00	$130.00	$130.00	3
Davidsonville	$130.00	$130.00	$130.00	1
Woodstock	$130.00	$130.00	$130.00	1
Elkridge	$130.00	$130.00	$130.00	1
Woodbine	$130.00	$130.00	$130.00	1
West Friendship	$130.00	$130.00	$130.00	1
Glen Burnie	$130.00	$130.00	$130.00	3
Gibson Island	$130.00	$130.00	$130.00	1
Gambrills	$130.00	$130.00	$130.00	1
Fulton	$130.00	$130.00	$130.00	1
Clarksville	$130.00	$130.00	$130.00	1
Arnold	$130.00	$130.00	$130.00	1
Annapolis	$115.50	$130.00	$90.00	8
Pasadena	$111.00	$130.00	$92.00	2
Pikesville	$110.00	$130.00	$90.00	2
Burtonsville	$110.00	$110.00	$110.00	1
Glenn Dale	$110.00	$110.00	$110.00	1
Andrews Air Force Base	$110.00	$110.00	$110.00	1
Washington Grove	$110.00	$110.00	$110.00	1
Glen Echo	$110.00	$110.00	$110.00	1
Derwood	$110.00	$110.00	$110.00	1
Garrett Park	$110.00	$110.00	$110.00	1
Montgomery Village	$110.00	$110.00	$110.00	1
Poolesville	$110.00	$110.00	$110.00	1
Upper Marlboro	$110.00	$110.00	$110.00	2
Boyds	$110.00	$110.00	$110.00	1
Spencerville	$110.00	$110.00	$110.00	1
Barnesville	$110.00	$110.00	$110.00	1
Bealsville	$110.00	$110.00	$110.00	1
Cabin John	$110.00	$110.00	$110.00	1
Laurel	$109.70	$130.00	$88.80	4
Towson	$108.00	$130.00	$75.00	5
California	$105.00	$105.00	$105.00	1
Saint Inigoes	$105.00	$105.00	$105.00	1
Scotland	$105.00	$105.00	$105.00	1
Benedict	$105.00	$105.00	$105.00	1
Tall Timbers	$105.00	$105.00	$105.00	1
Betterton	$105.00	$105.00	$105.00	1
Valley Lee	$105.00	$105.00	$105.00	1
Ridge	$105.00	$105.00	$105.00	1
Saint Marys City	$105.00	$105.00	$105.00	1
Chaptico	$105.00	$105.00	$105.00	1
Park Hall	$105.00	$105.00	$105.00	1
Patuxent River	$105.00	$105.00	$105.00	1
Bushwood	$105.00	$105.00	$105.00	1
Piney Point	$105.00	$105.00	$105.00	1
Great Mills	$105.00	$105.00	$105.00	1
Hollywood	$105.00	$105.00	$105.00	1
Lexington Park	$105.00	$105.00	$105.00	1
Leonardtown	$105.00	$105.00	$105.00	1
Loveville	$105.00	$105.00	$105.00	1
Mechanicsville	$105.00	$105.00	$105.00	1
Morganza	$105.00	$105.00	$105.00	1
Callaway	$105.00	$105.00	$105.00	1
Dowell	$105.00	$105.00	$105.00	1
Drayden	$105.00	$105.00	$105.00	1
Coltons Point	$105.00	$105.00	$105.00	1
Cobb Island	$105.00	$105.00	$105.00	1
Clements	$105.00	$105.00	$105.00	1
Dameron	$105.00	$105.00	$105.00	1
Avenue	$105.00	$105.00	$105.00	1
Abell	$105.00	$105.00	$105.00	1
Dickerson	$99.00	$99.00	$99.00	1
Mayo	$92.00	$92.00	$92.00	1
Hyattsville	$91.43	$110.00	$45.00	7
Baltimore	$90.45	$130.00	$88.80	42
Baldwin	$90.00	$90.00	$90.00	1
Windsor Mill	$90.00	$90.00	$90.00	1
White Marsh	$90.00	$90.00	$90.00	1
Westminster	$90.00	$90.00	$90.00	2
Essex	$90.00	$90.00	$90.00	1
Edgewood	$90.00	$90.00	$90.00	1
Crofton	$90.00	$90.00	$90.00	1
Glen Arm	$90.00	$90.00	$90.00	1
Gunpowder	$90.00	$90.00	$90.00	1
Conowingo	$90.00	$90.00	$90.00	1
Halethorpe	$90.00	$90.00	$90.00	1
Hampstead	$90.00	$90.00	$90.00	1
Gwynn Oak	$90.00	$90.00	$90.00	1
Whiteford	$90.00	$90.00	$90.00	1
Fork	$90.00	$90.00	$90.00	1
Curtis Bay	$90.00	$90.00	$90.00	1
Dundalk	$90.00	$90.00	$90.00	1
Damascus	$90.00	$90.00	$90.00	1
Finksburg	$90.00	$90.00	$90.00	1
Fort Howard	$90.00	$90.00	$90.00	1
Edgewater	$90.00	$90.00	$90.00	1
Earleville	$90.00	$90.00	$90.00	1
Germantown	$90.00	$110.00	$50.00	3
Freeland	$90.00	$90.00	$90.00	1
Cockeysville	$90.00	$90.00	$90.00	1
Clarksburg	$90.00	$90.00	$90.00	1
Glyndon	$90.00	$90.00	$90.00	1
Mount Airy	$90.00	$90.00	$90.00	1
Mount Rainier	$90.00	$90.00	$90.00	1
Lutherville Timonium	$90.00	$90.00	$90.00	2
Joppa	$90.00	$90.00	$90.00	1
Manchester	$90.00	$90.00	$90.00	1
Kingsville	$90.00	$90.00	$90.00	1
Keymar	$90.00	$90.00	$90.00	1
Union Bridge	$90.00	$90.00	$90.00	1
Sparks Glencoe	$90.00	$90.00	$90.00	1
Street	$90.00	$90.00	$90.00	1
Stevenson	$90.00	$90.00	$90.00	1
Pylesville	$90.00	$90.00	$90.00	1
Brentwood	$90.00	$90.00	$90.00	1
Brooklandville	$90.00	$90.00	$90.00	1
Reisterstown	$90.00	$90.00	$90.00	1
Rosedale	$90.00	$90.00	$90.00	1
Randallstown	$90.00	$90.00	$90.00	1
Riderwood	$90.00	$90.00	$90.00	1
Upper Falls	$90.00	$90.00	$90.00	1
Bowie	$90.00	$90.00	$90.00	4
Sykesville	$90.00	$90.00	$90.00	1
Upperco	$90.00	$90.00	$90.00	1
Taneytown	$90.00	$90.00	$90.00	1
Bladensburg	$90.00	$90.00	$90.00	1
New Windsor	$90.00	$90.00	$90.00	1
Parkton	$90.00	$90.00	$90.00	1
Phoenix	$90.00	$90.00	$90.00	1
Catonsville	$90.00	$90.00	$90.00	1
Perry Hall	$90.00	$90.00	$90.00	1
Owings Mills	$90.00	$90.00	$90.00	1
Maryland Line	$90.00	$90.00	$90.00	1
Monkton	$90.00	$90.00	$90.00	1
Jarrettsville	$90.00	$90.00	$90.00	1
White Hall	$90.00	$90.00	$90.00	1
Aberdeen Proving Ground	$90.00	$90.00	$90.00	1
Hydes	$90.00	$90.00	$90.00	1
Brooklyn	$88.80	$88.80	$88.80	1
Brookeville	$88.80	$88.80	$88.80	1
Marriottsville	$88.80	$88.80	$88.80	1
Olney	$88.80	$88.80	$88.80	1
Fort George G Meade	$88.80	$88.80	$88.80	1
Ashton	$88.80	$88.80	$88.80	1
Harmans	$88.80	$88.80	$88.80	1
Brinklow	$88.80	$88.80	$88.80	1
Sandy Spring	$88.80	$88.80	$88.80	1
Aberdeen	$88.50	$88.50	$88.50	1
Abingdon	$88.50	$88.50	$88.50	1
Galena	$88.50	$88.50	$88.50	1
Churchville	$88.50	$88.50	$88.50	1
Colora	$88.50	$88.50	$88.50	1
Havre De Grace	$88.50	$88.50	$88.50	1
Warwick	$88.50	$88.50	$88.50	1
Darlington	$88.50	$88.50	$88.50	1
Belcamp	$88.50	$88.50	$88.50	1
Benson	$88.50	$88.50	$88.50	1
Bel Air	$88.50	$88.50	$88.50	2
Cecilton	$88.50	$88.50	$88.50	1
Rising Sun	$88.50	$88.50	$88.50	1
Port Deposit	$88.50	$88.50	$88.50	1
Childs	$88.50	$88.50	$88.50	1
Perryman	$88.50	$88.50	$88.50	1
Perryville	$88.50	$88.50	$88.50	1
Chesapeake City	$88.50	$88.50	$88.50	1
Massey	$88.50	$88.50	$88.50	1
Charlestown	$88.50	$88.50	$88.50	1
Perry Point	$88.50	$88.50	$88.50	1
North East	$88.50	$88.50	$88.50	1
Forest Hill	$88.50	$88.50	$88.50	1
Fallston	$88.50	$88.50	$88.50	1
Hunt Valley	$82.50	$90.00	$75.00	2
Greenbelt	$82.33	$110.00	$45.00	3
Elkton	$81.75	$88.50	$75.00	2
Rockville	$80.00	$110.00	$50.00	8
Kensington	$80.00	$110.00	$50.00	2
Potomac	$80.00	$110.00	$50.00	2
Gaithersburg	$77.56	$110.00	$50.00	9
District Heights	$77.50	$110.00	$45.00	2
Oxon Hill	$77.50	$110.00	$45.00	2
Temple Hills	$77.50	$110.00	$45.00	2
Takoma Park	$77.50	$110.00	$45.00	2
Suitland	$77.50	$110.00	$45.00	2
Chevy Chase	$77.50	$110.00	$45.00	2
College Park	$75.67	$92.00	$45.00	3
Silver Spring	$75.00	$110.00	$50.00	16
Boring	$75.00	$75.00	$75.00	1
Chase	$75.00	$75.00	$75.00	1
Butler	$75.00	$75.00	$75.00	1
Long Green	$75.00	$75.00	$75.00	1
Georgetown	$75.00	$75.00	$75.00	1
Bethesda	$71.15	$110.00	$50.00	11
Churchton	$70.00	$70.00	$70.00	1
Waldorf	$70.00	$70.00	$70.00	3
Welcome	$70.00	$70.00	$70.00	1
Walkersville	$70.00	$70.00	$70.00	1
Barclay	$70.00	$70.00	$70.00	1
Aquasco	$70.00	$70.00	$70.00	1
Adamstown	$70.00	$70.00	$70.00	1
Accokeek	$70.00	$70.00	$70.00	1
Dunkirk	$70.00	$70.00	$70.00	1
Emmitsburg	$70.00	$70.00	$70.00	1
Woodsboro	$70.00	$70.00	$70.00	1
White Plains	$70.00	$70.00	$70.00	1
West River	$70.00	$70.00	$70.00	1
Fort Washington	$70.00	$70.00	$70.00	1
Faulkner	$70.00	$70.00	$70.00	1
Deale	$70.00	$70.00	$70.00	1
Clinton	$70.00	$70.00	$70.00	1
Sunderland	$70.00	$70.00	$70.00	1
Hughesville	$70.00	$70.00	$70.00	1
Grasonville	$70.00	$70.00	$70.00	1
Harwood	$70.00	$70.00	$70.00	1
Galesville	$70.00	$70.00	$70.00	1
Friendship	$70.00	$70.00	$70.00	1
North Beach	$70.00	$70.00	$70.00	1
Point Of Rocks	$70.00	$70.00	$70.00	1
Chesapeake Beach	$70.00	$70.00	$70.00	1
Centreville	$70.00	$70.00	$70.00	1
New Market	$70.00	$70.00	$70.00	1
Nanjemoy	$70.00	$70.00	$70.00	1
Charlotte Hall	$70.00	$70.00	$70.00	1
Cheltenham	$70.00	$70.00	$70.00	1
Chester	$70.00	$70.00	$70.00	1
Newburg	$70.00	$70.00	$70.00	1
Marbury	$70.00	$70.00	$70.00	1
Huntingtown	$70.00	$70.00	$70.00	1
Knoxville	$70.00	$70.00	$70.00	1
Jefferson	$70.00	$70.00	$70.00	1
Ijamsville	$70.00	$70.00	$70.00	1
Indian Head	$70.00	$70.00	$70.00	1
Ingleside	$70.00	$70.00	$70.00	1
Issue	$70.00	$70.00	$70.00	1
Middletown	$70.00	$70.00	$70.00	1
La Plata	$70.00	$70.00	$70.00	1
Lothian	$70.00	$70.00	$70.00	1
Lusby	$70.00	$70.00	$70.00	1
Libertytown	$70.00	$70.00	$70.00	1
Myersville	$70.00	$70.00	$70.00	1
Monrovia	$70.00	$70.00	$70.00	1
Owings	$70.00	$70.00	$70.00	1
Tracys Landing	$70.00	$70.00	$70.00	1
Saint Leonard	$70.00	$70.00	$70.00	1
Church Hill	$70.00	$70.00	$70.00	1
Sabillasville	$70.00	$70.00	$70.00	1
Burkittsville	$70.00	$70.00	$70.00	1
Buckeystown	$70.00	$70.00	$70.00	1
Bryantown	$70.00	$70.00	$70.00	1
Queenstown	$70.00	$70.00	$70.00	1
Queen Anne	$70.00	$70.00	$70.00	1
Prince Frederick	$70.00	$70.00	$70.00	1
Port Republic	$70.00	$70.00	$70.00	1
Port Tobacco	$70.00	$70.00	$70.00	1
Pomfret	$70.00	$70.00	$70.00	1
Broomes Island	$70.00	$70.00	$70.00	1
Brunswick	$70.00	$70.00	$70.00	1
Bryans Road	$70.00	$70.00	$70.00	1
Tuscarora	$70.00	$70.00	$70.00	1
Thurmont	$70.00	$70.00	$70.00	1
Rocky Ridge	$70.00	$70.00	$70.00	1
Sudlersville	$70.00	$70.00	$70.00	1
Shady Side	$70.00	$70.00	$70.00	1
Solomons	$70.00	$70.00	$70.00	1
Stevensville	$70.00	$70.00	$70.00	1
Bel Alton	$70.00	$70.00	$70.00	1
Braddock Heights	$70.00	$70.00	$70.00	1
Brandywine	$70.00	$70.00	$70.00	1
Beltsville	$67.50	$90.00	$45.00	2
Lanham	$67.50	$90.00	$45.00	2
Riverdale	$67.50	$90.00	$45.00	2
Frederick	$66.67	$70.00	$50.00	6
Capitol Heights	$50.00	$70.00	$45.00	5
Southern Md Facility	$45.00	$45.00	$45.00	1

Showing 288 of 288 rows

Coverage Gaps

135 zip codes without coverage

These areas in Maryland have no active air conditioning contractors providers.

AccidentAllenBartonBerlinBig poolBig springBishopvilleBittingerBivalveBloomingtonBozmanCambridgeChestertownChurch creekClaiborneCordovaCorriganvilleCrapoCresaptownCrisfieldCrocheronCrumptonDeal islandDeer parkDelmarDentonEast new marketEastonEckhart minesEdenEllerslieEwellFahrney keedy meFair playFederalsburgFishing creekFlintstoneFort ritchieFriendsvilleFrostburgFruitlandFunkstownGirdletreeGoldsboroGreensboroHagerstownHancockHebronHendersonHillsboro

Compare Air Conditioning Contractors Costs Across States

Lowest Avg Bid States

Arkansas$44.72 Nevada$53.26 Hawaii$53.85 District of Columbia$55.54 Iowa$60.08

Highest Avg Bid States

Oregon$240.28 Colorado$228.84 Minnesota$174.89 Delaware$174.10 Washington$166.58

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City Pages

Annapolis Baltimore Bethesda Capitol Heights Frederick Gaithersburg Hyattsville Rockville Silver Spring Towson

Other Services in Maryland

Car Accident Lawyers$200 avg Biohazard Cleanup$192 avg Garage Doors$155 avg Mold Remediation$132 avg Exterminators$125 avg Gutters & Downspouts$104 avg Siding Contractors$103 avg Solar Installation$101 avg Heating Contractors$95 avg Roofers$93 avg Bathroom Remodeling$88 avg Painters$83 avg

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Frequently Asked Questions

How much does air conditioning contractors cost in Maryland?

The average bid for air conditioning contractors in Maryland is $89.83, compared to the national average of $116.57. Prices range from $45 to $180 depending on location. Typical cost range: $150–$500 for repairs; $4,000–$12,000 for system replacement.

What cities in Maryland have air conditioning contractors coverage?

Maryland has air conditioning contractors providers in 288 cities across 434 zip codes, representing 93.1% coverage of the state. Top cities include Severna Park, Elk Mills, Simpsonville, Sparrows Point, Severn.

How does Maryland compare to the national average for air conditioning contractors?

Maryland is 22.9% below the national average for air conditioning contractors. It ranks #29 out of 45 states by average bid.

Are there areas in Maryland without air conditioning contractors providers?

Yes, 135 zip codes in Maryland currently have no active air conditioning contractors providers. Underserved cities include Accident, Allen, Barton, Berlin, Big pool.

When should I hire a ac repair & hvac in Maryland?

Your AC is blowing warm air despite the thermostat being set correctly — likely a refrigerant, compressor, or capacitor issue Emergency service is available in most Maryland areas. HVAC companies are overwhelmed from June through August — everyone calls when the first heat wave hits.

What should I look for in a ac repair & hvac in Maryland?

EPA Section 608 certification for refrigerant handling — this is federally required, not optional. NATE certification (North American Technician Excellence) — the gold standard for HVAC technicians. HVAC contractors need both a state contractor license (requirements vary) and EPA Section 608 certification for any refrigerant work.

Can I do air conditioning contractors work myself instead of hiring a pro?

What warranty should I expect from a ac repair & hvac in Maryland?

Repairs should carry a 30–90 day warranty on labor and parts. New system installations should include a 1–2 year labor warranty from the installer plus the manufacturer's equipment warranty (typically 5–10 years on parts, sometimes up to 10 years on the compressor with registration).