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4.8on Google· 3,000 reviewsObserved September 30, 2026
Based in Los Angeles
JW Plumbing, Heating and Air offers plumbing, drain, heating and cooling services, with kitchen plumbing repairs among its specialties.
4.9on Google· 364 reviewsObserved September 30, 2026
Based in Los Angeles
5.0on Google· 100 reviewsObserved September 30, 2026
Found through an area search. Confirm they serve your address.
4.9on Google· 64 reviewsObserved September 30, 2026
Found through an area search. Confirm they serve your address.
5.0on Google· 63 reviewsObserved September 30, 2026
Found through an area search. Confirm they serve your address.
4.9on Google· 60 reviewsObserved September 30, 2026
Found through an area search. Confirm they serve your address.
4.9on Google· 57 reviewsObserved September 30, 2026
Based in Los Angeles
5.0on Google· 48 reviewsObserved September 30, 2026
Found through an area search. Confirm they serve your address.
5.0on Google· 41 reviewsObserved September 30, 2026
Based in Los Angeles
4.8on Google· 39 reviewsObserved September 30, 2026
Based in Los Angeles
4.9on Google· 36 reviewsObserved September 30, 2026
Based in Los Angeles
4.8on Google· 36 reviewsObserved September 30, 2026
Based in Eagle Rock
Smith Air Conditioning & AC Repair is a downtown Los Angeles company that repairs, maintains and installs air conditioning for homes and businesses.
5.0on Google· 29 reviewsObserved September 30, 2026
Based in Los Angeles
West Lake Heating & HVAC is a downtown Los Angeles company that repairs, installs and maintains heating and air conditioning for homes and businesses.
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21 ZIP codes, 246,069 households (ACS 2020-2024, 20 of 21 ZIPs)
Heating and cooling faults fall into four groups. Electrical: a tripped breaker or a failed small part such as a capacitor. Airflow: a clogged filter, a frozen coil or leaking ducts. Refrigerant: a leak, which should be found and fixed, not just topped up. The equipment itself: a failed compressor, or a cracked heat exchanger in a gas furnace, which can put carbon monoxide into the home and means the furnace stays off until it is replaced. A diagnosis should name which, in writing, before any repair-or-replace conversation.
Replacement is a design job, not a swap. The right size comes from a load calculation (ACCA Manual J) based on the home's insulation, windows, orientation and ducts. It should not be copied from the old unit, which was often the wrong size. Oversized systems switch on and off too often, cool unevenly and fail early. Ducts matter as much as the equipment: leaky or undersized ducts waste much of what the system produces.
Replacing a system needs a mechanical permit from your city's building department; in the City of Los Angeles that is the Department of Building and Safety. For most system changeouts and for duct replacements over 25 feet, California's energy code also requires an independent field test by a certified rater (an ECC-Rater, formerly a HERS rater), which shows the ducts are sealed and, where the code calls for it, that the refrigerant charge is right.
If you are replacing a central system, ask about a heat pump. Los Angeles has a mild climate, and one unit both heats and cools. Two checks come first: whether the electrical panel has room for the new circuit, since a panel upgrade is a job of its own, and whether the existing ducts can carry the airflow a heat pump needs. Ductless mini-splits suit homes without ducts and additions. Rebate programs from the state and utilities change often; ask the contractor what is current and get it in writing.
Refrigerants are changing. Equipment built since 2025 uses R-454B or R-32 instead of R-410A, though R-410A systems built before then can still be sold from stock, and a failed outdoor unit on an existing R-410A system can still be replaced on its own. Ask which refrigerant a quoted system uses and what that means for parts and service later.
HVAC contractors hold the C-20 classification from the Contractors State License Board, and the law requires them to carry workers' compensation whether or not they have employees. Check the record at cslb.ca.gov for an active license, the bond and a workers' compensation policy rather than an exemption. Ask who will do the install, whether the company gets the permit, and whether the field test is included.
Maintenance is simple: change the filter on schedule, keep the outdoor unit clear, and have the system checked before the cooling season. A spring check finds weak capacitors, dirty coils and slow refrigerant leaks before a heat wave does.
Read the homeowner guide: what to do, who to call, and how to check the company