Furnace and Heating Repair

Furnace Blowing Cold Air, Shutting Off, or Not Starting?

It’s time to call for heating repair if you notice any of these:

• The house won’t warm up, even with the thermostat turned up
• Air from the vents feels cool or barely warm
• The furnace keeps shutting off before the house is warm
• Your heat pump won’t switch from cooling to heating
• One or two rooms stay cold while the rest are fine
• New noises, like a boom at startup, rattling, or a squeal
• A burning or electrical smell that doesn’t go away
• Water collecting around the base of the furnace

Before you call, check the thermostat setting and batteries, the furnace breaker, and the air filter. It’s also a good time to make sure your carbon monoxide alarm is working.

• If you smell gas or hear hissing: Get everyone out without flipping any switches or lighting a flame. Once you’re outside, call your gas company or 911 if anyone could be in danger.
• If your carbon monoxide alarm sounds: Move everyone outside, call 911, and stay out until responders say it’s safe. If the furnace is the cause, don’t run it again until it’s serviced.

Leave anything inside the furnace to us. Same-day repair is often available, and the visit and diagnosis are free.

Call (951) 678-3275 Book Furnace Repair Online

Heating Problems We Find and Fix

The same symptom can come from very different problems, which is why a proper diagnosis matters. Here are a few common issues we look for when your heating system isn’t working the way it should.

Ignition and Flame Sensor Trouble

If your furnace clicks, tries to start, and then gives up, a worn igniter or a dirty flame sensor may be the reason. Either one can cause a furnace to shut down before it heats the house.

Blower and Airflow Problems

If the burners light but little warm air reaches your rooms, the cause may be a worn blower motor, a clogged filter, or blocked vents or return grilles. Restricted airflow can also leave some rooms cold while others stay warm.

Thermostat and Control Issues

Dead batteries, the wrong setting, or a wiring fault can keep a thermostat from telling the furnace to run. Sometimes the problem is the control board inside the furnace instead.

Heat Pumps That Won’t Heat

Heat pumps have their own problems, like lukewarm air or a system that won’t switch from cooling to heating. The cause may be the controls, the refrigerant level, or the valve that switches the system between heating and cooling. For cooling problems, learn more about AC repair.

Have Your Furnace Diagnosed Now

Worth Fixing, or Time for a New Furnace?

Spending money on a furnace that’s close to the end is frustrating, and so is replacing one that could have kept going. A repair is usually the smarter choice when:

• The furnace has been dependable until now
• One part has worn out, and the rest is sound
• Parts for your model are still easy to get
• The repair costs far less than a new furnace

It may be time to talk about replacement when:

• You’re calling for repairs every winter
• A major part has failed on a furnace that’s getting old
• Energy bills keep climbing, even after repairs

We’ll look at more than your furnace’s age, and we won’t pressure you either way.

If a repair will keep your furnace going for several more winters, we’ll tell you. If it would only buy a little time, you’ll hear that from us too, along with what replacing your furnace would involve.

Heating Maintenance for Catching Problems Early

A furnace can sit idle from spring through fall, then run hard on cold inland nights from late fall into March. A yearly tune-up gives a technician the chance to catch a worn part before it leaves you without heat.

The Consumer Product Safety Commission recommends a professional heating checkup every year. Depending on your system, a tune-up may include checks of the burners, the safety controls, and the airflow, along with a look at the thermostat and filter.

If something is starting to wear, we’ll point it out before it turns into a bigger repair.

“My system needed some items replaced through wear and tear by the weather. Steve advised me of . . . the issues with my system and explained why. Steve was a pleasure to work and communicate with.” —Chris S.

Book a Heating Tune-Up Online

From Your Call to a Warm House

1. Get in touch. Call, book online, or use the form, and describe what the furnace is doing and when it started.
2. We listen first. Your technician will hear what you’ve noticed before opening up your furnace.
3. We find the cause. The technician tests the furnace, the thermostat, and the airflow to pin down what’s actually wrong.
4. We explain your options. You’ll hear what we found and what each option would cost, and then you decide.
5. We fix it and test it. Once you approve the work, we complete the repair, run a full heating cycle, tidy up, and show you what we did.

Call Us About Your Furnace

Heating Repair in Riverside County, North County San Diego, and San Bernardino County

Riverside County

We repair furnaces and heat pumps in Riverside, Corona, Murrieta, Temecula, Menifee, Moreno Valley, Lake Elsinore, Perris, Hemet, Wildomar, and nearby communities.

North County San Diego

Across North County San Diego, our heating technicians serve Escondido, San Marcos, Vista, Poway, Fallbrook, Oceanside, Carlsbad, Encinitas, and Rancho Bernardo.

San Bernardino County

In San Bernardino County, we cover San Bernardino, Rancho Cucamonga, Fontana, Rialto, Redlands, Ontario, Chino, Upland, Colton, Loma Linda, and surrounding areas.

Schedule Furnace Repair Today

When your home won’t warm up, Guardian Plumbers, Heating, Air & Electrical is here to help.

A technician will track down the cause, walk you through what’s happening, and lay out your options before any work begins. You’ll know what the issue is, what can be done about it, and what to expect next.

We’re open 7 days a week, and same-day repair is often available. Call today or book online.

Call (951) 678-3275 Book Online to Get Your Heat Back On

Furnace Repair FAQs

Why is my furnace blowing cold air?

Often it’s something simple, such as a clogged filter or a thermostat setting, like the fan switched to “on” instead of “auto.” It can also point to an ignition problem. If those simple fixes don’t help, give us a call.

Why does my furnace shut off before the house warms up?

That’s often short cycling. A dirty filter that restricts airflow or a worn flame sensor can both make a furnace shut down early. Replace the filter first, and if it keeps happening, call us, since frequent starts and stops can wear out parts sooner.

Why is my furnace making a loud noise?

A boom when the burners light, a rattle, or a squeal can point to a startup problem, a loose part, or a worn blower component. If a noise is new or getting louder, turn the system off at the thermostat and schedule a repair.

How much does furnace repair cost?

The visit and the diagnosis are free, and you’ll have the repair price before we start. It depends on the cause: a loose wire and a failed blower motor can both leave you without heat and cost very different amounts, so we diagnose the furnace in person first.

Can you fix my furnace in one visit?

In many cases, yes. Replacing an igniter or a thermostat is usually a single-visit job. A bigger repair or a part that has to be ordered can take longer, and we’ll give you the timeline before we start.

Can you repair a furnace in the attic or garage?

Yes. Whether your furnace is in the attic, the garage, or a hall closet, we’ll repair it where it’s installed. Let us know where yours is when you call so the technician comes prepared.