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Fast & Reliable Furnace Repair in London, Ontario

24/7 Emergency Furnace Repair Services. Licensed HVAC Technicians. Same-Day Service Available across London and surrounding areas.

london furnace repair

10+

Years Experience

5,000+

Repairs Completed

24/7

Emergency Service

98%

Customer Satisfaction
Our Services

Complete Heating Services

From a noisy furnace to a full system replacement one trusted team for everything your home needs to stay warm.

Furnace Repair

Fast diagnostics and repairs for any make or model, with same-day service across London.

Emergency Repair

Heat out? Our 24/7 emergency team is on call to restore warmth fast day or night.

Furnace Installation

High-efficiency furnace installation by licensed technicians with full warranty coverage.

Furnace Replacement

Honest assessments and seamless replacements that lower energy bills from day one.

Furnace Maintenance

Annual tune-ups that extend furnace lifespan and keep your home safely heated.

Thermostat Repair

Smart and traditional thermostat installation, repair and programming for any system.

Heat Pump Services

Heat pump installation, repair and maintenance for year-round home comfort.

Commercial Heating

Reliable commercial HVAC service contracts for offices, retail and industrial sites.

london furnace repair
Why Choose Us

Why Homeowners Choose Us

A locally owned team that treats your home like our own backed by 10+ years of trusted service in London.

Need Emergency Furnace Repair?

Our team is available 24/7 to restore your home’s heating quickly and safely.
About NorthGuard

London's Trusted Heating Experts Since 2014

NorthGuard Heating was founded with one mission: deliver honest, expert furnace service that London families can rely on especially when winter hits hardest.

Our Mission

Keep every home in London warm, safe and efficient with transparent pricing and skilled craftsmanship.

10+ Years Experience

Thousands of furnaces serviced across Southwestern Ontario by our certified G2 and G3 technicians.

Customer-First Commitment

We don't leave until your heat is back on backed by a 100% satisfaction guarantee.

london furnace repair
Our Process

How It Works

A simple, stress-free 5-step path from cold house to comfortable home.

Step 1

Contact Us

Call or book online in under 2 minutes.
Step 2

Schedule Inspection

Same-day & next-day appointments.
Step 3

Diagnose Problem

Honest diagnostics, upfront pricing.
Step 4

Repair the Furnace

Quality parts, expert workmanship.
Step 5

Enjoy Reliable Heat

Warm, safe and energy-efficient home.
Common Issues

Common Furnace Problems We Fix

Recognize one of these? We’ve seen it thousands of times and know exactly how to fix it.

A furnace that runs but doesn’t heat is usually caused by a faulty ignition, dirty filter, thermostat issue, or gas supply problem. Our technicians diagnose the exact cause and restore heat — usually in a single visit.

Check your thermostat batteries and breaker first. If those are fine, the issue may be a faulty control board, blower motor, or safety switch. Call us for a same-day diagnostic

Banging, rattling, squealing or humming usually indicates worn belts, loose components, or motor problems. These should be addressed quickly to prevent expensive damage.

Weak airflow is often caused by a clogged filter, blocked ducts, or a failing blower motor. We’ll inspect the full system and restore proper airflow throughout your home.

Pilot light issues can stem from a faulty thermocouple, draft, or dirty pilot orifice. For safety, gas-related issues should always be handled by a licensed technician.

Rising bills often point to an aging furnace, dirty components, or poor maintenance. A tune-up can dramatically improve efficiency or it may be time to consider replacement.

Cold rooms usually indicate ductwork problems, zoning issues, or an undersized furnace. We’ll balance airflow and recommend the right long-term fix.

If your thermostat is unresponsive or the temperature reading is off, it may need recalibration, new batteries, or replacement with a modern smart thermostat.

Service Areas

Proudly Serving London & Beyond

Locally based with full coverage across London, Ontario and surrounding Southwestern Ontario communities.

Downtown London

Old East, Wortley, SoHo & core neighbourhoods

North London

Masonville, Stoneybrook, Sunningdale

South London

White Oaks, Westmount, Pond Mills

East London

Argyle, Hamilton Road, Fanshawe area

West London

Oakridge, Byron, Hyde Park, Riverbend

Nearby Communities

St. Thomas, Strathroy, Komoka, Dorchester

Reviews

What London Homeowners Say

Real reviews from real neighbours across London, Ontario.

★★★★★
“Called at 9pm with no heat — they had a tech here within the hour and fixed it on the spot. Lifesavers!”

Sarah Mitchell

Wortley Village
★★★★★
“Replaced our old furnace with a high-efficiency unit. Clean install, fair price, and our bills dropped immediately.”

David Chen

Masonville
★★★★★
“Honest, professional, and didn’t try to upsell. The technician explained everything clearly. Highly recommend.”

Amanda Foster

Byron
★★★★★
“Annual maintenance has kept our 12-year-old furnace running like new. Best HVAC company in London.”

Mike Patel

White Oaks
★★★★★
“Emergency call on Christmas Eve — they came out without complaint and saved our holiday. Forever grateful.”

Jennifer Lee

Hyde Park
★★★★★
“Punctual, polite, and skilled. Diagnosed the issue in 10 minutes after another company told us we needed a new furnace.”

Robert Singh

Old East
FREQUENTLY ASKED QUESTIONS

London Furnace Repair FAQs

Have questions about furnace repair, heating problems, or booking service? These quick answers help visitors understand your london furnace repair services before they call.

Our london furnace repair service can include furnace diagnostics, ignition checks, thermostat troubleshooting, airflow inspection, safety checks, and repair recommendations. This is demo content and can be edited inside Elementor.

Common signs include no heat, weak airflow, unusual noises, frequent cycling, pilot light or ignition problems, rising energy bills, or uneven heating across rooms.

This FAQ section is written for an emergency-ready heating service layout. You can update the answer with your exact availability, service hours, and emergency phone number.

Many furnace issues can be inspected during the first visit. The final repair time depends on the problem, furnace condition, and whether replacement parts are required.

Yes. Regular maintenance helps improve heating performance, reduce unexpected breakdowns, identify worn parts early, and keep your furnace operating more safely.

Repair is often suitable for minor or moderate issues, while replacement may be better for very old, inefficient, or repeatedly failing systems. A technician can inspect the furnace and explain the best option.

This demo answer is written for a multi-brand furnace repair business. You can replace it with your real supported brands, models, and warranty details.

You can add your phone number, booking form link, or contact page link here. The section is designed to guide visitors toward requesting service quickly.

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