Furnace Won't Ignite: Find Where the Startup Stops
Furnace clicking but not lighting? Follow the startup sequence a technician uses: thermostat, power, inducer, pressure switch, igniter, gas and flame sensor.
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We fix furnaces all over New Hope for a $79 trip charge, and it disappears when you approve the repair. The price is flat-rate and written before work starts, and we're open 7 days, 7am–9pm. Many 1960s split-entries here still return air through panned floor joists, which can starve a furnace of airflow.
New Hope was built almost all at once, late 1950s to early 1970s, so repair calls follow a pattern. Most split-entries and ramblers are on their second or third furnace, and many still pull return air through sheet-metal pans nailed across the joists. Those returns leak and run undersized. Add a thick, high-MERV filter and the blower is starved outright; heat builds in the exchanger, the high limit opens, and the burners cycle off and on all night.
In a split-entry the furnace sits in the lower level, often beside the laundry and water heater, with a short chimney or a PVC vent out the side. Frost on the PVC terminations and a condensate line that freezes where it runs near the garage wall are the January calls. We take a static pressure reading along with testing the burner and ignition parts, because swapping a limit switch on a starved furnace just brings us back.
Updated September 23, 2026
Every furnace repair call in New Hope starts with a $79 trip charge, waived when you approve the repair, and a written price before any work. Same prices in New Hope as in every town we serve. National averages (HomeGuide, 2026), not our prices: an igniter $100–$250, a flame sensor $80–$250, a pressure switch $150–$400. More in the furnace repair cost guide.

More detail on our furnace repair page.
Symptom guides: Blowing cold air · Won't ignite · Short cycling · Blinking light codes · Pressure switch trips · Strange noises · Leaking water · Burning smell · Red tag · Carbon monoxide
It could, especially on a panned joist return. A thick or high-MERV filter looks like an upgrade, but on a return that's already too small it chokes the blower. The furnace overheats and the limit switch shuts the burners off. If the cycling stops after a fresh filter, airflow is the culprit, and adding return area is the long-term fix so a better filter doesn't strangle the furnace.
On a high-efficiency furnace, the two usual reasons are frost building on the PVC intake or exhaust outside, and a condensate line freezing where it runs near an exterior or garage wall. Either one trips the pressure switch. Clear frost gently from the pipes and reset the furnace once. If it locks out again, we reroute or insulate the drain and check whether the terminations sit too low for drifting snow.
Furnace clicking but not lighting? Follow the startup sequence a technician uses: thermostat, power, inducer, pressure switch, igniter, gas and flame sensor.
Read the guideA furnace that turns on and off too often tells you what's wrong by how long it runs. How to time a cycle, and what seconds, minutes and frequent cycles mean.
Read the guideA red tag means a technician or the gas utility found your furnace unsafe and shut it off. Common reasons, what not to do, and how to get a second opinion.
Read the guideFurnace repair in New Hope? Call or send a request.