Tests 24-volt control voltage at the thermostat, transformer and control board. Tells us whether the thermostat failed or something upstream killed it.
Furnace Thermostat Repair Severance CO done right the first time
When your furnace ignores the thermostat, we diagnose and fix it fast. Furnace Thermostat Repair Severance CO covers everything from a dead display to a furnace that short-cycles at 3 a.m.
Serving Severance and nearby areas.
How big is the thermostat job?
Thermostat plus wiring
Replace the thermostat and run or repair low-voltage wiring back to the furnace.
- 1. Thermostat only Swap the thermostat, test the control voltage, confirm the furnace responds.
- 2. Thermostat plus wiring Replace the thermostat and run or repair low-voltage wiring back to the furnace.
- 3. Full control circuit Thermostat, transformer, board fuse and control board tested together; planned in writing first.
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- 24Services from one local team
- 15Areas served around Severance
- Test firstVoltage checked before any part is swapped
- One tripCommon thermostats and boards carried on the truck
What's Included in a Thermostat Service Call
Every thermostat call starts with a full diagnostic of the control circuit, not just a thermostat swap.
Work order
Furnace Thermostat Repair- Full control circuit test: We test voltage at the thermostat, the transformer and the control board with a multimeter. That tells us whether the thermostat failed or something upstream killed it. Skipping this step is how people end up replacing the same thermostat twice.
- Thermostat removal and inspection: We pull the thermostat off the wall, check the wiring connections, and look for corrosion or loose terminals. A surprising number of no-heat calls are just a backed-out wire on the R terminal.
- Replacement thermostat install: Standard, programmable and smart thermostats are all available. We wire it, mount it level, and program the schedule to match how you actually use the house. Setup of the manufacturer app is included on smart models.
- Furnace-side verification: After the thermostat is working, we run a full heat cycle and check heat rise at the supply plenum. If the furnace short-cycles or the limit switch trips, we catch it before we leave.
- Written readings and old part: You get the voltage readings, the heat rise numbers and the old thermostat or failed part.
What the first visit covers
First visit
We test the thermostat, transformer and control board, then run a full heat cycle to confirm the furnace responds correctly.
Thermostat repair at your home
Houses across Severance and the surrounding Weld County towns.
Blank display
Thermostat has no power and the furnace won't respond
Wrong temperature
Thermostat reads several degrees off from the room
Short cycling
Furnace starts and stops every few minutes
Smart upgrade
Replacing an old thermostat with a connected model
Thermostat work at businesses
Shops, garages and small commercial spaces that can't lose heat during working hours.
Unit heaters
Thermostat and control board service on shop heaters
Multi-zone controls
Separate thermostats for different areas of the building
After-hours setbacks
Programmable schedules that match your operating hours
Furnace Thermostat Repair Severance CO: What We Actually Do
A thermostat that lies about the temperature costs you money every month. We test the whole control circuit before replacing anything, so the fix is the right one the first time.
Furnace Thermostat Repair Severance CO is the diagnostic and repair service that restores communication between your thermostat and your furnace. We test the low-voltage control circuit with a multimeter, check the transformer, inspect the control board and confirm the thermostat is calling for heat correctly. If the thermostat itself is dead, we replace it. If the furnace is the problem, we find that too. Most jobs take 60 to 120 minutes.
Severance sits in Weld County where winter nights drop below 10 degrees Fahrenheit, and a thermostat that reads the wrong temperature will run your furnace into the ground. We see it constantly: furnaces blowing cold air, furnaces that won't turn on, and pilot lights that won't stay lit because the thermostat never sent the signal. If you searched for Furnace Thermostat Repair near me Severance CO, we're the local crew that answers.
- What it is
- Diagnosis and repair of the thermostat and its control circuit
- When it helps
- Blank display, wrong readings, or a furnace that won't respond
- What you get
- Tested repair, verified heat cycle, and the old part back
How Our Thermostat Service Works
Five steps, no surprises. Here's exactly what happens from the moment you call until the heat is back on.
Tools and Methods We Use
Each method answers a different question. Together they leave very little to guess.
Measures gas pressure at the valve and verifies it matches the furnace's rating plate. Used on every gas-side repair.
Checks carbon monoxide levels and combustion efficiency after any burner-side work. Required on every gas furnace we open.
Confirms whether a standing pilot's thermocouple is generating enough millivolts to hold the gas valve open.
Reads flue temperature and oxygen levels to confirm the furnace is venting correctly after repair.
When Severance Homeowners Call Us
A homeowner in the Highland Meadows area wakes up to a 58-degree house and a thermostat that won't respond to any button press.
We schedule a same-day call, test the low-voltage circuit, and find a failed transformer.
HomesA family in Windsor is renovating and wants a smart thermostat installed while the walls are still open for a C-wire run.
We run the C-wire from the furnace to the new thermostat location, mount the smart thermostat, connect it to the home Wi-Fi,…
HomesA property manager in Eaton has a rental where the furnace runs constantly but the unit never gets warm.
We test the thermostat against a calibrated thermometer and find it reading 6 degrees low.
BusinessesA homeowner near County Road 74 has a propane furnace that won't stay lit and a thermostat that keeps resetting.
We test the thermocouple with a thermocouple tester, check gas pressure with a manometer, and find both a weak thermocouple and a…
Homes
How Thermostat Repair Runs in Severance
Severance sits at about 5,000 feet in Weld County, and that elevation changes how furnaces run. Combustion air is thinner, so furnaces are derated and the thermostat's cycle times run longer than they would at sea level.
Highland Meadows area
Newer construction with smart thermostat wiring already in the walls. Most thermostat swaps here are straight replacements with no C-wire run needed.
Downtown Severance
Older homes with standing-pilot furnaces and two-wire thermostat runs. Thermocouple testing is part of almost every call here.
County Road 74 corridor
Larger lots with propane furnaces. Propane burns hotter, so thermocouples and heat exchangers wear faster than on natural gas.
- Highland Meadows area
- Downtown Severance
- County Road 74 corridor
- Severance commercial strip
From problem to finished result.
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PhotoBlank Thermostat, No Heat in Severance
Before: A homeowner called at 7 a.m. with a blank thermostat and a 55-degree house. The furnace fan was running but the burner never lit. They'd already replaced the thermostat batteries with no change.
After: We found a blown 3-amp fuse on the control board and a failed transformer. Replaced both, tested the circuit, and had the furnace firing within 90 minutes. The house was back to 68 degrees by noon.
Short-Cycling Furnace in Windsor
Before: A furnace was cycling every 4 minutes and the gas bill had jumped 30 percent over the previous winter. The homeowner assumed the furnace was on its way out and had gotten a replacement quote.
After: The thermostat was reading 5 degrees low, which kept the furnace running past setpoint and tripping the limit switch. The replacement quote was never needed.
Smart Thermostat Install in Eaton
Before: A rental property had an old mechanical thermostat that tenants kept overriding. The owner was getting calls every month about inconsistent heat and high gas usage.
After: We installed a smart thermostat with a C-wire run, locked the schedule to reasonable setbacks, and gave the owner app access. Gas usage dropped about 12 percent over the next two months compared to the same period the year before.
Thermostat Problems We Fix in Severance
Most thermostat complaints fall into a handful of patterns. Here's what we see most often and what it usually means.
Thermostat display is blank but the furnace fan runs
The thermostat has lost low-voltage power.
Furnace won't turn on when the thermostat calls for heat
No heat at all. In a Severance January, pipes in exterior walls can freeze within hours of losing heat.
Furnace short-cycles every few minutes
Short cycling wears out the igniter, the limit switch and the blower motor. It also spikes your gas bill because the furnace never reaches steady-state efficiency.
Thermostat reads the wrong temperature
You pay for heat you're not getting. We check the thermostat against a calibrated thermometer and look for drafts, direct sun or placement issues.
Furnace banging or booming on startup
A delayed ignition bang means gas is building up before it lights. That's a safety issue, not just a noise complaint.
Why Fix the Thermostat Before Anything Else
A thermostat is the cheapest part of your heating system and the most common reason a furnace stops working.
Stop guessing at the problem
We test the thermostat, transformer, control board and gas valve with a multimeter and manometer before we quote anything.
Cut your gas bill
A thermostat that reads 4 degrees off will run your furnace longer than it should.
Avoid a furnace replacement
Furnaces get condemned for cracked heat exchangers when the real problem was a failed control board or a dirty flame sensor.
Get smart control of your heat
Smart thermostat installation in Severance, Colorado lets you schedule setbacks by room and see runtime data from your phone.
What you get on the job
Clear records you can keep and share.
Voltage readings
Recorded at the thermostat, transformer and control board
Heat rise numbers
Measured at the supply plenum after the repair
Old part returned
The failed thermostat or component handed back to you
Ten Years Working on Front Range Furnaces
Severance Furnace Repair Pros has been fixing furnaces in Weld County since 2016.
Control voltage
Read at the thermostat and board to show whether power is reaching the thermostat at all.
Flame signal
Read at the flame sensor to confirm the burner is proving ignition and holding it.
Heat rise
Measured at the supply plenum to confirm the furnace is moving air within its rated range.
Are you in our Severance service area?
Type your ZIP or town to check. If yours is not listed, call and ask.
Severance ZIP codes
- 80650
- 80546
- 80550
- 80610
What Severance Homeowners Say
Thermostat was blank and the furnace wouldn't kick on. Called at 8 a.m., tech was here by 11. Turned out to be a blown fuse on the control board plus a dead thermostat. He had both on the truck and had heat back on in under an hour. Price was exactly what he quoted on the phone.
Our furnace kept short-cycling and I was sure we needed a new one. The tech tested the thermostat and found it was reading 5 degrees off, which was making the furnace cycle constantly. New thermostat, problem gone. Saved us thousands over replacing the furnace.
We manage several rentals around Severance and Eaton. They've done thermostat replacements and control board swaps for us on short notice more than once. Straight pricing, no upsell, and they document what they found so I can pass it to the owner. That's why we keep calling.
Furnace Thermostat Questions We Get Every Week
Short answers for the first few minutes. The team can cover the rest.
Still have a question?
Describe what you are seeing and we will point you to the right next step.
(970) 1234567We quote before we start.
The three most common causes we find are dead batteries, a tripped furnace door switch, and a blown 3-amp fuse on the control board. After that it's a failed transformer or a broken low-voltage wire. If the display is blank and the furnace fan still runs, the thermostat has lost power. We test voltage at the thermostat and at the board to pin it down.
We do. Severance Furnace Repair Pros handles thermostat replacement in Severance for every major brand, including Carrier, Trane, Goodman, Rheem, Lennox, Bryant, York and American Standard. We carry standard and programmable units on the truck and can order smart models for next-day install. Call (970) 1234567 to schedule.
Yes. Smart thermostat installation in Severance, Colorado usually takes 45 to 60 minutes. Most homes built after 2000 already have a C-wire, which makes it a straight swap. Older homes sometimes need a C-wire run from the furnace, which adds about 30 minutes. We set up the app and confirm the schedule before we leave.
Other Furnace Work We Handle
Other services from the same team.
Get Your Furnace Thermostat Repair Severance CO Scheduled
(970) 1234567We answer the phone, we show up when we say we will, and we tell you the price before we start.
Call for Furnace Repair in Severance
Call (970) 1234567 and describe what your furnace is doing. We answer, triage the symptom and give you a two-hour arrival window. Regular hours run 8 a.m. to 6 p.m. Monday through Friday, with emergency coverage for no-heat calls. If you are in ZIP 80650, 80546, 80550 or 80610, you are in our regular service area.