HVAC Installation in Walla Walla, WA
A new system here will heat from October through May and cool from July through August every year. Tell us about the house, and a licensed contractor who covers Walla Walla County will get in touch.
Tell us about the job
It takes about a minute.
A system built for ten months of work
Walla Walla asks for heat from October through May and cooling in July and August. That is ten months a year your system is running, and it needs to handle a 29°F winter night and an 86°F summer afternoon without strain.
57.5% of homes here heat with electricity, and the power does not always stay on. In 2024, 23% of Washington households went at least 24 hours without it. This area has logged 67 winter storms and 37 damaging wind events over the past ten years. A new system should be sized and installed to hold up through that, not just through an ordinary week.
- 8 months
- October through May, your system heats
- 2 months
- July through August, it cools
- 29°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.
That registration puts the business on file with the state, but nobody tested the contractor's work. It is a record, not a credential.
Because Washington doesn't license the trade, the check on this job comes from the local building office instead. In most cities and counties, installing a new furnace, air conditioner or heat pump needs a permit, and an inspection once the work is done.
Source: Washington State Legislature
- When should I replace my HVAC system?
- Replace it when repairs start coming often, when it's old enough that parts are harder to find, or when it can't keep up on the coldest or hottest days anymore. Here that matters more than most places, since homes need heat from October through May and winter nights average 29°F, so a furnace that's struggling gets tested for eight months straight. If a repair bill starts to run close to what a new system costs, that's usually the point to stop patching it. A contractor can look at the age, the repair history, and how it's performing now to tell you where you actually stand.
- Should I replace my furnace and air conditioner at the same time?
- If they're close in age, yes, it usually makes sense to replace them together. Furnaces and air conditioners installed at the same time tend to wear out around the same time, and pairing a new outdoor unit with an old indoor coil can cause problems since the two are matched to work as a set. Here cooling only runs two months a year, July and August, while heat runs eight, so the air conditioner sees far less wear than the furnace does over a given year. That means it's common for one to fail well before the other, and in that case a contractor can tell you whether replacing just the one that's failed makes sense or whether the age of the other one means it's due too.
- What happens during an HVAC installation?
- The contractor removes the old equipment, sets the new furnace or air conditioner in place, and connects it to the ductwork, gas or electric line, and condensate drain. They check the refrigerant charge if it's an air conditioner or heat pump, test the gas connections and venting if it's a furnace, and run the system through its cycles to confirm it's heating or cooling correctly. Replacing a furnace, air conditioner, or heat pump needs a permit from the local building office in most cities and counties, along with an inspection once the work is done. The contractor typically handles pulling that permit and scheduling the inspection as part of the job.