Radiant Harbor Climate Systems handles heating and cooling for homes across Ontario, CA—from a struggling furnace on a cold January night to an AC unit that quits mid-August. Our technicians dig into the real problem rather than patching over symptoms, so repairs actually hold. Ask about current scheduling availability to get your system running right.
Ontario, CA
From routine upkeep to bigger repairs, here's how Radiant Harbor Climate Systems helps homeowners around Ontario. Pick a service to learn more, or reach out with your questions.
A struggling air conditioner on a hot Ontario afternoon is more than uncomfortable — it can make your whole home miserable. Our ac repair service covers everything from refrigerant issues and frozen coils to faulty compressors and electrical faults. We diagnose the problem thoroughly before recommending any fix, so you know exactly what's going on. Ask about current scheduling availability to get your cooling back on track.
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Replacing an aging system or adding cooling to a new space? Proper hvac installation makes a real difference in comfort and energy bills for years ahead. We help you choose the right size and efficiency rating for your home, then handle the full setup — from electrical connections to refrigerant charging and airflow testing. A correctly installed system simply performs better.
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Furnace repair can't always wait, especially when temperatures drop. Strange noises, short cycling, weak airflow, or a pilot that won't stay lit are all signs something needs attention. Radiant Harbor Climate Systems can help identify the root cause — whether it's a faulty igniter, a failing blower motor, or a heat exchanger concern — and walk you through your repair options clearly.
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Installing a new furnace is a big decision, and the details matter. The right unit size, proper venting, and correct airflow balance all affect how well your home heats and how efficiently it runs. We assess your space and existing ductwork before recommending equipment, then complete the installation to manufacturer specifications. Ask about current scheduling availability for a home evaluation.
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A heat pump handles both heating and cooling, which makes it one of the hardest-working pieces of equipment in any home. Regular heat pump service keeps the refrigerant charge correct, the coils clean, and the reversing valve functioning properly. If your system is struggling to maintain temperature in either season, our team can help identify what's limiting its performance and get it running efficiently again.
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The right thermostat makes your entire heating and cooling system easier to manage. We install and configure a range of models — from basic programmable units to smart thermostats that learn your schedule — and make sure communication with your hvac equipment is dialed in correctly. A properly calibrated thermostat can also help catch comfort problems that might otherwise go unnoticed.
Get helpLeaky or poorly designed ductwork can quietly undermine even a well-maintained hvac system. Rooms that never quite reach the right temperature, excess dust, or unusually high energy bills are common signs something's off. We inspect duct runs throughout Ontario-area homes, seal leaks, repair damaged sections, and can advise on improvements that help your heating and cooling system deliver air where it's actually needed.
Get helpRoutine hvac maintenance is one of the simplest ways to keep your system reliable season after season. A thorough tune-up covers filter checks, coil cleaning, electrical connections, refrigerant levels, and overall system performance — for both heating and cooling equipment. Catching small issues early can help avoid bigger repair bills later. Ask about current scheduling availability before the busy season starts.
Get helpRadiant Harbor Climate Systems was built around one straightforward idea: homeowners deserve clear answers and real solutions, not upsells and guesswork. Ontario summers push air conditioners hard, and the winters are cold enough that a broken furnace is a genuine problem—not just an inconvenience. Whether it's a heat pump that's lost efficiency, an AC repair that keeps getting put off, or a furnace making noises it shouldn't, the team here approaches every job with the same care. We walk through what we find, explain the options in plain language, and let you make the call. Regular hvac maintenance can help identify small issues before they become expensive ones, and we're happy to talk through what a seasonal checkup looks like for your specific equipment. Good climate control shouldn't feel like a mystery.
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More than a quick fix — a thoughtful approach to your hvac and everyday comfort.
Before any work begins, we tell you what we found and what it will take to fix it—no vague quotes or surprise line items after the fact.
Hot rooms on one side of the house and cold rooms on the other usually point to a fixable underlying issue; we trace the cause rather than just adjusting the thermostat.
We explain findings in everyday language and let you decide what makes sense for your home and budget, without pressure to approve every possible service at once.
Weak or inconsistent airflow can signal duct issues, blower problems, or a clogged filter situation that's stressing the whole system—we check the full picture.
Call or send a request with your hvac issue, your address, and the best way to reach you.
Confirm current availability, talk through the details, and set up your appointment.
Your local pro assesses the issue, explains the estimate, and completes the approved work.
Radiant Harbor Climate Systems works throughout Ontario and the surrounding Inland Empire communities, reaching neighborhoods from Rancho Cucamonga to Chino and points in between. We cover a wide stretch of the region because homeowners here deserve reliable heating and cooling support without a long wait or a long drive. Service areas can shift based on job volume and technician routing, so please reach out directly to confirm that we can get to your address and to ask about current scheduling availability.
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Here's what homeowners often ask before booking hvac service.
Many HVAC systems can use smart thermostats, although compatibility should be checked before installation.
Yes. Heat sources, sunlight, drafts, and location can influence temperature readings.
Service life varies considerably depending on equipment type, installation quality, climate, maintenance, and operating conditions.
HVAC stands for heating, ventilation, and air conditioning.
A mini-split provides heating or cooling without traditional central ductwork and typically uses one outdoor unit with one or more indoor units.
Short cycling may be associated with filters, thermostats, overheating, sensors, airflow, or equipment sizing.
Properly operating cooling systems remove some indoor moisture, while specialized humidity-control equipment may provide additional control.
Routine maintenance can help identify wear, dirty components, airflow problems, and other developing issues.
Potential causes include depleted batteries, power loss, wiring issues, a tripped breaker, or an HVAC safety switch.
If the smell is strong, persistent, or accompanied by smoke, shut the system down when safe and arrange an inspection.
Tell us what's going on and we'll help you find the next step. Call us or send a request below.
(840) 237-3769Serving Ontario, CA1351 S Grove Ave, Ontario, CA 91761, Ontario, CA 91761
Availability24 hours a day, 7 days a week
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