Deer Park · cold-climate heat pumps
Heat pump installation in Deer Park, sized for a colder winter
Some Deer Park homes burn four cords of wood a winter; others feed an electric furnace or fill a propane tank twice before spring. All of them need a heat pump that keeps working once the thermometer drops below zero.
- Five below
- Equipment chosen for its rated output at −5°F, not on mild days.
- Shop too
- A cold-climate mini-split for the shop on the same permit.
- Wood stove stays
- Keep the stove; the heat pump becomes the steady base.
The typical Deer Park install call starts with a statement from the utility or the propane dealer. A house beyond the gas main, out toward Clayton or Williams Valley, has an electric or propane furnace, a wood stove doing most of the work, and a January bill that has finally made a heat pump worth the conversation. In town, around Main Street and Crawford Street, it is more often a 1960s duct system with an aging AC and an owner wondering whether one heat pump could handle both seasons. It can — if it is sized for Deer Park rather than Spokane, because the design temperature up here is lower and the cold spells last longer.
The site visit answers that, and it costs nothing. We measure rooms, insulation and windows, check the ducts for size and leaks, and spend real time on the electrical service: the panel, the line in from the road, and the well pump and shop already drawing from it. We also ask how the house is heated today, because the answer shapes the plan. Whether backup comes from the electric furnace, from a propane furnace in a dual-fuel arrangement, or simply from the wood stove is your decision, made with the numbers on the table.
Deer Park situations and our usual answer
| Situation | What we usually recommend | Why |
|---|---|---|
| Electric furnace past the gas main, toward Clayton | Cold-climate heat pump on the existing ducts, furnace held in reserve | Electric resistance costs the most of any heat available in the area |
| Propane furnace, no cooling | Dual-fuel heat pump added to the furnace and existing ducts | Two tank fills a winter, and still a hot house in July |
| Wood stove doing all the work | Heat pump sized to hold the house alone to well below zero | Four cords a year, and a cold house whenever you travel |
| 1960s ducts in town with an R-22 air conditioner | Heat pump that replaces the AC and takes on most of the heating too | One machine for both seasons instead of a failing AC beside a furnace doing all the winter work |
| Long overhead service drop, panel near its limit | Service change or panel upgrade listed on the quote, permitted and inspected | Finding the limit at the site visit keeps install day on schedule |
| Detached shop or ADU with no heat | Cold-climate mini-split on its own circuit, same permit | Space heaters on extension cords are a poor plan for a shop |
Acreage, a long service drop and a lower design temperature
On Deer Park acreage, the wiring is what usually holds a project up. Think of a 1970s panel already carrying a well pump, a shop subpanel and an electric range: it may not have the space or the amperage for a heat pump, and a long overhead service from the road can droop under the extra draw. The circuit, disconnect, panel upgrade or service change each appear as a line on the written quote and are permitted and inspected along with the heat pump.
On dual-fuel systems, the thermostat passes the job to the propane furnace only at the outdoor temperature where propane becomes cheaper than running the heat pump — at current propane prices, well below 32°F. The wood stove stays yours to light whenever you like. The heat pump itself is chosen from a Manual J for its rated output at five below, not for the number it posts on a mild spring day.
Install day follows the same routine every time: equipment set and leveled, the line set pressure-tested and pulled to a deep vacuum, the charge weighed in by a technician holding EPA 608 Universal certification and checked on gauges, staging programmed into the thermostat, and a commissioning report with the readings left on the kitchen counter. Changeouts take a day; a full system with electrical takes one to two, and a panel upgrade can add one more. We schedule the permit and the inspection, and adding a shop mini-split to the same trip saves a second drive up US-395 to the acreage.
Where a Deer Park install starts
Starting prices around Spokane, with equipment and installation both counted in: from $4,900 for an inverter cold-climate heat pump, from $4,200 for a heat pump and coil added to a propane furnace as dual-fuel, and from $3,350 for a one-zone mini-split in a shop or ADU. Those describe the region, not your property; the service, the ducts and the house’s heat loss decide how far above them your figure sits, and it is written up after the no-charge visit with cash and financed prices in adjacent columns. Cold-climate equipment comes from Mitsubishi, Daikin, Fujitsu, Carrier, Bryant and Goodman in whatever tier fits the budget, and rebates are checked for your utility. Booking the visit online takes up to $500 off a full-system install, and the first-year tune-up is included, so the defrost cycle and staging are checked after the first real winter.
| System, installed | Price |
|---|---|
| Inverter (variable-speed) heat pump | from $4,900 |
| Heat pump outdoor unit only | from $4,200 |
| Ductless mini-split, single zone | from $3,350 |
| Central air conditioner | from $4,150 |
| Heat pump with air handler | from $5,750 |
| Each added mini-split zone | from $1,900 |
| Multi-zone mini-split systems | On request |
Starting prices with equipment and installation included, before utility rebates and before our up to $500 off a full system. Multi-zone systems are quoted on request. The site visit and written quote cost nothing.
Questions we hear
Will a heat pump really heat a house in a Deer Park winter?
A cold-climate one will. We specify models that still produce heat at −13°F or colder and size them with Deer Park’s own design temperature, which sits lower than Spokane’s. Keep the furnace or the wood stove as the reserve for the worst nights, and you have the least expensive way to heat a house this far north of town.
Can I keep the wood stove and the propane furnace?
Keep both. The usual Deer Park setup is dual-fuel: the heat pump does the bulk of the winter, the propane or electric furnace takes over automatically below an outdoor temperature we set together, and the stove runs whenever you feel like lighting it. Nobody has to flip a switch or remember to change a setting.
Our service comes in on a long overhead line and the panel is full. Does that stop the install?
It does not stop anything. We work out what the service can carry during the site visit; if it needs a panel upgrade, a new circuit or a full service change, that work is permitted and inspected along with the heat pump. The work and its cost are on the written quote before you commit.
How long will the installation take?
Replacing an AC on an existing furnace is normally a one-day job. A heat pump that needs fresh copper, a dedicated circuit and new thermostat wiring usually takes one to two days, and a panel upgrade can add one more. Dates and the inspection are on the quote, so you can plan the week before we arrive.
Can you put a mini-split in the shop at the same time?
Yes, and it is worth doing together. A single-zone cold-climate mini-split for the shop or an ADU is added to the same quote and permit, with its own circuit as a separate line. One trip to the property instead of two keeps the cost down, and the shop unit is covered by the same written warranty as the house system.
Call, text or book
Phone or text to set up a visit, or use the website and a full-system install drops by up to $500. If all the current furnace or AC needs is a repair, the $99 diagnostic counts toward that repair rather than adding to it.
Book a visit
Tell us what is going on
We call or text back to confirm a time window, usually the same day.
- $99 diagnostic Counted inside the written repair price you approve. Say no to the repair and it is the whole bill.
- Up to $50 off An HVAC repair booked online. Appliance repairs booked online: up to $22 off. Never taken off the diagnostic.
- Up to $500 off A full-system install booked through our site-visit form, first-year tune-up included. The site visit costs nothing.
Prefer to text? Send a photo of the model tag to (509) 370-5361.