Production checkout is not configured yet. Complete payment go-live to accept real payments.
All locations
San Francisco County

HVAC in San Francisco.

The same trusted HVAC expertise that's served the Bay Area since 1986 — now on your street in San Francisco. Edwardians in the Richmond, lofts in SoMa — HVAC in a city that never planned for ducts.

A view of San Francisco, California
Retrofits in San Francisco's older neighborhoods

Inner Richmond, Sunset, Noe Valley and beyond.

The Richmond and Sunset are wall-to-wall 1910s–1930s Edwardians and Marina-style flats; Noe Valley and the Mission add Victorians, and Bernal Heights a mix of cottages on steep lots. Common thread: no attic to speak of, shared walls, floor furnaces or wall heaters, and a garage-level mechanical space that's already full.

In San Francisco, ductless mini-splits and small-duct high-velocity systems do most of the heavy lifting — heating and cooling with minimal demolition and no lost ceiling height. Where there is a basement or garage, we build compact ducted heat pump systems and route trunks through the least destructive path. We handle SF permitting and historic-district considerations, and we specify heat pumps that heat efficiently in fog-cooled 45°F mornings rather than equipment specced for a hotter climate.

Inner RichmondSunsetNoe ValleyBernal HeightsMission
Delcon HVAC technician working on a new installation in San Francisco
New builds in San Francisco

Mission Bay and Dogpatch new construction — planning through execution.

New SF construction in Mission Bay and Dogpatch is tight, tall, and stacked. We come in at the planning stage: load calcs that account for glazing and shared walls, condenser placement that satisfies both the acoustics and the setback rules, ventilation and filtration designed for city air, and a commissioned handoff with balanced airflow room by room.

See everything we do

What we handle in San Francisco

AC repair in San Francisco

Warm room, short cycling, or a system that runs all afternoon without catching up — we diagnose and repair air conditioners and heat pumps of any brand in San Francisco. Refrigerant leaks, failed capacitors and compressors, condensate problems, and the airflow restrictions that cause most "weak AC" calls.

Furnace repair in San Francisco

Gas furnaces, wall furnaces, and the floor furnaces still working in plenty of Inner Richmond homes. We handle ignition and flame-sensor faults, blower and control board failures, heat exchanger inspection, and honest replace-or-repair advice when a unit is past its service life.

Heat pump installation in San Francisco

Gas-to-electric conversions and high-efficiency heat pump installs, sized with a Manual J load calculation rather than the old nameplate. Duct design, permits, Title 24 duct-leakage testing, rebate paperwork, and commissioning with measured airflow before we hand over the thermostat.

HVAC contractor for San Francisco homes and businesses

A licensed, insured HVAC contractor serving the Bay Area since 1986 — ductwork redesign and sealing, indoor air quality and filtration, ventilation, smart thermostats and zoning, plus full commercial and refrigeration work.

Emergency HVAC service in San Francisco

No heat in a cold snap or no cooling in a heat wave is not a next-week problem. We run 24/7 emergency HVAC service across San Francisco, and Comfort Club members go to the front of the queue.

The Comfort Club

Year-round care for $34.99 a month

A simple membership that keeps your system clean and your air fresh — and puts you first in line whenever you need us.

  • Coil cleaning & filter changes, twice a year
  • Duct cleaning before allergy season and before winter
  • Priority service calls, day or night
  • Member discounts on large repairs and replacements

Know a neighbor in San Francisco who needs us?

Refer a friend who installs a complete system and you get a $500 Visa gift card — they get 10% off the entire system.

Refer a friend
Call DelconGet an Estimate