HVAC Installation in Lake Havasu City, AZ
A new system here will heat from November through April and cool from May through September every year. Tell us about the house, and a licensed contractor who covers Mohave County will get in touch.
Tell us about the job
It takes about a minute.
A new system here works almost year round
Eleven months out of twelve, a home in Lake Havasu City needs either heat or cooling. Winter nights average 35°F from December through February, and homes here run heat November through April, six months of the year. Then summer takes over, with afternoons averaging 96°F from May through September. Whatever you install has to hold up on both ends, not just the heat this area is known for.
Power is worth planning around too. Across Arizona, 7% of households went at least 24 hours without power in 2024, and this area has recorded 12 winter storms and 149 damaging wind events over the past ten years. A system that comes back on by itself once power returns matters here.
- 6 months
- November through April, your system heats
- 5 months
- May through September, it cools
- 35°F
- the average winter night it heats against
- 96°F
- the average summer afternoon it cools against

NOAA nClimDiv, 1991–2020 normals
Arizona requires HVAC contractors to hold a state license.
That license comes from the Arizona Registrar of Contractors, and it belongs to the contractor, not to any one job. The state tested that contractor before handing it out, and it keeps a record of who holds it. What it does not do is follow the job once work starts. Nobody from the Registrar comes to your house to look at the new furnace or the refrigerant lines running to your air conditioner.
That part falls to your local building office. In most of Mohave County, putting in a new furnace, air conditioner or heat pump needs a permit before the work starts and an inspection after it is done. That inspection is what actually checks the gas connections, the wiring, and the way the system was set into place, the part of the job where a mistake is dangerous rather than just inconvenient. The license tells you the person doing the work was tested. The permit and inspection are what tells you this particular installation was checked.
Sources: Arizona State Legislature · Arizona Registrar of Contractors
- When should I replace my HVAC system?
- Replace it when repairs start happening every year, when your energy bills keep climbing, or when the unit is struggling to keep up with the season it's in. Homes here need cooling for 5 months with afternoons averaging 96°F, and heat for 6 months with winter lows averaging 35°F, so a system here is working through 11 months of the year. That kind of run time wears equipment down faster than a light-use system would wear. If your system is limping through one season and you know the next one is coming, that is the sign to stop repairing and start planning a replacement.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, yes, it usually makes sense to do them together. A furnace and air conditioner installed at the same time are matched to work with each other, and a contractor can size and set up the ductwork for both in one job. If one unit is much newer than the other, replacing just the older one is reasonable. A contractor can look at the age and condition of both and tell you whether pairing the work makes sense for your house.
- What happens during an HVAC installation?
- A contractor first removes the old equipment, then sets the new furnace, air conditioner, or heat pump in place and connects it to your ductwork, electrical, and in some cases gas line. After that, they check refrigerant charge, test airflow, and confirm the thermostat and controls are working correctly. Arizona requires HVAC contractors to hold a state license through the Registrar of Contractors, so ask to see that license before work starts. The whole job is inspected and tested before the contractor considers it done, and how long it takes depends on the size and layout of your house, which is something the contractor can walk you through beforehand.

