HVAC Installation in San Bernardino, CA
A new system here will heat from November through March and cool from May through October every year. Tell us about the house, and a licensed contractor who covers San Bernardino County will get in touch.
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Eleven months of work for a new system
In San Bernardino County a new system barely rests. Summer afternoons average 99°F from May through October, six months of the compressor running hard most days. Then winter turns around and asks for heat from November through March, with nights averaging 39°F. That is 11 months where the system is either heating or cooling this house.
Most homes here heat with gas, and whatever you install has to hold up to both ends of that swing, not just one. A system sized for a mild winter but a hard summer, or the other way around, will struggle in whichever season it wasn't built for.
- 5 months
- November through March, your system heats
- 6 months
- May through October, it cools
- 39°F
- the average winter night it heats against
- 99°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
California requires HVAC contractors to hold a state license.
That license is held by the contractor as a business, not issued per job, so the same license covering a repair down the street covers the installation going into your house. It comes from the Contractors State License Board, which tests contractors before licensing them and keeps a record of who holds one.
For an installation, the other piece is San Bernardino County's building office. In most cities and counties here, a new furnace, air conditioner or heat pump needs a permit before the work starts and an inspection once it's in, checking that the unit is installed and connected the way it should be. That inspection is separate from the license. The license says the contractor was tested and is on record with the state. The permit and inspection say this installation, in this house, was checked once it was in place.
Sources: California Legislative Counsel · Contractors State License Board
- When should I replace my HVAC system?
- Once repairs start happening every year, or the system is old enough that a licensed technician tells you a repair isn't worth it, it's time to replace it. Watch for signs like uneven heating or cooling between rooms, higher energy bills without a clear reason, or a furnace and air conditioner that just can't keep up anymore. With homes here needing heat or cooling 11 months out of the year, a system that's struggling has almost no season to rest and recover. A contractor can look at the age and condition of your system and tell you whether repair or replacement makes more sense.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, replacing them together often makes more sense than doing one now and the other later. A furnace and air conditioner installed at different times may not be matched well, and mismatched systems can run less efficiently. Since summer afternoons here average 99°F and winter nights drop to 39°F, both systems get real work every year, so neither one is coasting through an easy season. A contractor can look at the age and condition of each unit and tell you whether replacing them together is the right call for your house.
- What happens during an HVAC installation?
- A licensed contractor removes the old equipment, checks the ductwork and connections, and sets the new furnace and air conditioner or heat pump in place. They connect the electrical, gas or refrigerant lines depending on the system, then test everything to make sure it runs and heats or cools the way it should. Since 70.8% of homes here heat with gas, gas line and venting checks are a normal part of many installations. California requires HVAC contractors to hold a state license through the Contractors State License Board, so ask to see it before work begins.