HVAC Installation in Hermiston, OR
A new system here will heat from September through June and cool from July through August every year. Tell us about the house, and a licensed contractor who covers Umatilla County will get in touch.
Tell us about the job
It takes about a minute.
A new system here runs almost all year
Winter nights in Hermiston average 27°F from December through February, and homes here need heat from September through June, ten months of the year. Summer asks less of a system, just July and August, with afternoons averaging 81°F. Put together, this area needs heat or cooling all 12 months.
Most homes here heat with electricity, so a power outage is a heating problem too. Oregon saw 20% of households lose power for at least a day in 2024, and this area has logged 90 winter storms and 77 damaging wind events over the past ten years. That is worth weighing when you choose a system and decide where its outdoor parts will sit.
- 10 months
- September through June, your system heats
- 2 months
- July through August, it cools
- 27°F
- the average winter night it heats against
- 81°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Oregon requires HVAC contractors to hold a state license.
The Construction Contractors Board licenses the contractor, not the job. That license means the state has tested the person or company and keeps a record of them. It follows the contractor from house to house, not from project to project. Work under $1,000 falls outside this rule, but an installation like yours will run well past that, so the contractor doing it needs to hold the license.
In most cities and counties, a job like this also needs a permit from the local building office, with an inspection once the work is done. The license tells you the contractor was tested. The permit and inspection tell you this particular job gets checked before it is called finished.
Source: Oregon Legislative Assembly
- When should I replace my HVAC system?
- Replace it when repairs stop making sense or the system can't keep up anymore. If your furnace is struggling to hold the house warm on the coldest nights, or your air conditioner runs constantly through July and August without catching up, that's a sign the equipment is wearing out rather than having a bad day. Age matters too. A furnace or air conditioner nearing the end of its typical service life is more likely to fail at the worst time, and here that means a cold night when lows are down near 27°F. If you're calling for the same repair more than once, or a contractor tells you a part is failing that's central to how the system runs, replacement is usually the better move.
- Should I replace my furnace and air conditioner at the same time?
- If they're close in age, replacing them together often makes sense, but it depends on the condition of each unit. Homes here need heat for 10 months and cooling for only 2, so the furnace does most of the work and tends to wear first. If your air conditioner is still running fine and isn't old, there's no rule that says it has to go just because the furnace does. A contractor can look at both and tell you honestly whether one is close behind the other or has real life left in it.
- What happens during an HVAC installation?
- A contractor removes the old equipment, sets the new furnace and air conditioner or heat pump in place, and connects it to the ductwork, gas or electric line, and thermostat. They'll check that the ducts are sized right for the new equipment, since ducts that worked for the old system don't always match the new one. Most cities and counties require a permit for this work and an inspection once it's done, so the contractor handles that as part of the job. Afterward they test the system to make sure it heats and cools the way it's supposed to before they leave.