HVAC Installation in Vallejo, CA
A new system here will heat from November through April and cool from June through September every year. Tell us about the house, and a licensed contractor who covers Solano County will get in touch.
Tell us about the job
It takes about a minute.
Ten months of the year ask something of this system
A new system in Vallejo has to handle both ends of the year. Winter nights average 40°F from December through February, and homes here need heat from November through April. Summer afternoons run 88°F, with cooling needed June through September. Between the two, ten months out of the year ask something of whatever is installed.
Most homes here heat with gas, about 60.5% of them, and any new furnace or heat pump has to be sized for that swing between a 40°F night and an 88°F afternoon. Power is worth asking about too. Statewide, 17% of households went at least 24 hours without power in 2024, and this area has logged 52 damaging wind events over the past ten years. Ask your contractor how the new system comes back on after an outage, especially if it's a heat pump or a furnace without a standing pilot.
- 6 months
- November through April, your system heats
- 4 months
- June through September, it cools
- 40°F
- the average winter night it heats against
- 88°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
California requires HVAC contractors to hold a state license.
California licenses HVAC contractors through the Contractors State License Board. The license is issued to the contractor, not to any single job, so it covers the business that shows up at your door, not just this installation.
For an installation like this, the license tells you who is accountable for the work, but it is not the only thing standing between you and a bad job. In most Solano County cities and counties, replacing a furnace, air conditioner or heat pump needs a permit from the local building office, and the finished installation gets inspected before it is signed off.
Sources: California Legislative Counsel · Contractors State License Board
- When should I replace my HVAC system?
- Replace it when repairs start costing more than they're worth, or when the system is old enough that another breakdown is just a matter of time. Most furnaces and air conditioners last a decade or two, and the last few years of that life tend to bring more frequent repair calls. If your system is coming due for a repair and it's already up there in age, replacing it can save you from paying for a fix now and a new system soon after. A contractor can look at the specific unit and tell you where it stands.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, replacing them together is usually the better move, even though it costs more up front. A furnace and air conditioner installed at the same time are matched to work together, and pairing a new unit with an old one can mean the new one never runs at its best. Homes here need both, heat from November through April and cooling from June through September, so both sides of the system get real use. If only one is failing and the other still has years left in it, replacing just that one is reasonable.
- What happens during an HVAC installation?
- A contractor removes the old equipment, sets the new furnace and or air conditioner in place, and connects it to your ductwork, gas line or electrical circuit, and refrigerant lines as needed. They'll check that the ducts are sized right for the new equipment, since ducts built for an old system don't always suit a new one. Once it's connected, they test the system, check for gas or refrigerant leaks, and confirm it's heating or cooling correctly before they leave. In California, any contractor doing this work needs to hold a state license through the Contractors State License Board.