HVAC Installation in Kennewick, WA
A new system here will heat from October through May and cool from June through August every year. Tell us about the house, and a licensed contractor who covers Benton County will get in touch.
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Kennewick asks a new system to work eleven months a year
Winter nights here average 28°F from December through February, and a new furnace or heat pump has to hold the house warm from October through May. That's 8 months on heat alone. Summer afternoons average 86°F, and the same system needs to bring the house back down from June through August. Together that's 11 months a year the house is asking for one or the other.
Most homes here heat with electricity, so when the power goes out, the heat goes with it. Benton County has seen 14 winter storms and 25 damaging wind events over the past ten years, and statewide, close to a quarter of households lost power for at least a day in 2024. Whatever gets installed should be sized for a hard winter here, not a mild one.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 28°F
- the average winter night it heats against
- 86°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Washington requires contractors to register with the state.
Washington's registration puts a business on file with the Department of Labor and Industries. There is no trade exam behind it, so it tells you the business exists on paper, not that the state checked how well they install a heating and cooling system.
For this job, the protection comes from the permit. In most cities and counties, putting in a new furnace, air conditioner or heat pump needs a permit from the local building office, and an inspector checks the finished work once it's done. That inspection, not the registration, is what confirms the gas connections, wiring and refrigerant lines were done right.
Source: Washington State Legislature
- When should I replace my HVAC system?
- Once repairs start getting frequent, or the system is old enough that a breakdown could leave you without heat or air, it is time to start planning a replacement rather than waiting for a failure. Homes here need heat from October through May, so a furnace that fails during those months is a real problem, not just an inconvenience. Rising energy bills with no other explanation, uneven temperatures room to room, and a system that runs constantly are all signs the equipment is wearing out. A contractor can look at the age and condition of what you have and tell you whether it makes more sense to keep repairing it or replace it.
- Should I replace my furnace and air conditioner at the same time?
- If both are original to the house and one is failing, replacing them together is usually worth considering, even though it is not required. A furnace and air conditioner installed at the same time are matched to work together, and pairing an old unit with a new one can mean the new one never runs as well as it should. Homes here need heat from October through May and cooling from June through August, so both parts of the system get real use. A contractor can tell you the condition of the unit you are not replacing and whether it makes sense to do both now or wait.
- What happens during an HVAC installation?
- A contractor removes the old furnace, air conditioner or heat pump and sets the new equipment in place, then connects it to the ducts, electrical, and for gas furnaces, the gas line. The refrigerant lines get connected and charged, the thermostat gets wired or paired, and the system gets tested through a full heating and cooling cycle before the contractor leaves. In most cities and counties this work needs a permit from the local building office, with an inspection once the job is done. That inspection is there to confirm the installation was done to code, which matters for both safety and for the equipment running the way it is supposed to.