609 Clarke Rd, Unit 10, London, ON 24/7 Emergency Service
Proudly part of the Jayden's Mechanical family
Central air conditioner condenser running beside a leafy London, Ontario backyard

Poulsen Heating & Air Conditioning Furnace and AC repair in London since 1991

The Clarke Road shop London has called for thirty-five years, now backed by the wider Jayden's Mechanical family.

Book a Service Call (519) 455-7330
1991

About Poulsen Heating & Air Conditioning

Poulsen Heating & Air Conditioning is a licensed heating and air conditioning contractor at 609 Clarke Rd, Unit 10 in London, Ontario. Since 1991 we have repaired, installed, and maintained furnaces, air conditioners, heat pumps, and ductless systems for homes across London and the surrounding Southwestern Ontario communities.

The company joined the Jayden's Mechanical family in 2026. We still answer the phone. We still send the same licensed technicians to the same neighborhoods. What changed is the crew behind them: more hands for the January cold snaps, more equipment brands, and the depth to take on anything from a single repair to a full home system.

What we do

Full heating and cooling, the London way

Blue gas burner flames glowing inside a home furnace during a heating service call in London, Ontario

Furnace Repair

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Outdoor air conditioning condenser unit beside the dark brick wall of a London, Ontario home

AC Repair

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Wall-mounted ductless mini-split condenser unit installed at a London area home

Ductless AC Installation

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Cold-climate air-source heat pump installed beside the red-brick wall and garden of a London, Ontario home

Heat Pump Repair & Installation

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Modern linear gas fireplace glowing in the living room wall of a London, Ontario family home

Gas Fireplace Installation

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Homeowner adjusting a smart thermostat set to heat on a dark wood wall in a London, Ontario home

Thermostat Repair & Replacement

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Furnace repair that holds up through London winters

When a January cold snap or lake-effect snow pushes your furnace hard, you want the same Clarke Road team London families have called since 1991. We diagnose the real failure, not the symptom, and stock the common igniter, blower, and control-board parts that fail in older London homes so most repairs finish in one visit.

  • Same-day and after-hours winter callouts
  • Honest repair-vs-replace guidance for aging units
  • High-efficiency Carrier, Trane, and KeepRite systems
  • Gas, propane, and oil furnaces serviced
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Air conditioner repair for humid London summers

Southwestern Ontario summers run hot and sticky, and a central AC that quits in July is more than uncomfortable. Poulsen Heating & Air Conditioning has kept London homes cool for over thirty years, fixing refrigerant leaks, capacitor failures, and frozen coils fast, and now backed by a wider Jayden team for peak-season surges.

  • Refrigerant recharge and leak detection
  • Capacitor, contactor, and compressor diagnostics
  • Ductless and central AC covered
  • Pre-season tune-ups that prevent mid-summer breakdowns
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Ductless mini-splits for additions, sunrooms, and older homes

Not every London home has ductwork where you need it. Older North London and Wortley Village homes, garage conversions, and rear additions cool and heat beautifully with a ductless mini-split, without the mess of running ducts. We size the indoor and outdoor units to your room and mount them clean.

  • Single-zone and multi-zone systems
  • Heating and cooling in one unit
  • Quiet, efficient inverter technology
  • Clean line-set runs with minimal wall exposure
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Heat pumps built for Ontario swings

A cold-climate heat pump cuts heating bills and adds summer cooling in one move, and the rebates available in 2026 make the math work for a lot of London homes. Poulsen Heating & Air Conditioning sizes and installs heat pumps that genuinely perform through our winters, and now our Jayden-backed crew handles the peak-season surge.

  • Cold-climate heat pump sizing and load math
  • Ontario rebate and financing guidance
  • Dual-fuel pairing with existing furnaces
  • Annual maintenance to protect efficiency
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Gas fireplaces that warm the room, not just the wall

A direct-vent gas fireplace adds real heat and a focal point to a London living room, and it keeps working when the power goes out. We install and service direct-vent and inserts, run the gas line safely to code, and tune the flame so it heats the space rather than looking pretty and doing nothing.

  • Direct-vent and insert installations
  • Gas line runs to code, permitted
  • Pilot, thermocouple, and valve repairs
  • Annual cleaning and safety inspection
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Smart and programmable thermostat service

A failed thermostat is the most common reason a perfectly good furnace or AC won't start, and the easiest to fix. We replace aging mercury and programmable thermostats with smart models that learn your London home's schedule, and we wire them correctly the first time so the cycle actually works.

  • Nest, Ecobee, and Honeywell installs
  • C-wire and power solutions for older homes
  • Multi-stage and heat-pump compatible
  • Setup so the schedule saves energy
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A new chapter

Same Clarke Road shop.
A wider family behind it.

In 2026, Poulsen Heating & Air Conditioning joined the Jayden's Mechanical family. Here is what that means for the London families who have trusted us for thirty-five years.

For you, almost nothing changes day to day. The team that shows up is the team that has always shown up: the same licensed technicians, the same Clarke Road shop, the same phone number. What is new is the backing: a larger Southwestern Ontario group means more crew for peak-season and emergency calls, access to more equipment brands and financing, and the depth to handle anything from a single furnace repair to a full home comfort system.

The same shop. The same crew. More depth for the cold snaps.

If you have called us before, nothing about your experience changes except the resources behind it. If you are new to Poulsen, you get a thirty-five-year local company with the reach of a larger group.

What stays the same

  • The Clarke Road shop609 Clarke Rd, Unit 10, London. Same address since 1991.
  • The same phone number(519) 455-7330, still answered by our team.
  • The same techniciansLicensed, local, and the ones who know your neighborhood.
  • The same standardHonest repair-vs-replace guidance, every single time.

What London homeowners say

Called on a Sunday in January with no heat and they had someone at our door within a couple of hours. Honest about what was wrong and didn't push a new furnace we didn't need.
DK D. K. · London, ON
We have used Poulsen for three houses over the years. Same dependable service every time, and the team that came out knew our neighborhood and the kind of furnace we had. M. R., Byron
They installed a ductless unit in our sunroom addition and you genuinely cannot see the line set from inside. Clean work and they cleaned up after. Homeowner, Komoka

London, and the communities around it

  • London/
  • St. Thomas/
  • Strathroy/
  • Dorchester/
  • Ilderton/
  • Komoka/
  • Lucan/
  • Byron
Questions

What London homeowners ask us

Who is Poulsen Heating & Air Conditioning?
Poulsen Heating & Air Conditioning is a licensed heating and air conditioning contractor based at 609 Clarke Rd, Unit 10 in London, Ontario. Founded in 1991, the company repairs and installs furnaces, air conditioners, heat pumps, ductless mini-splits, gas fireplaces, and thermostats for homes in London, St. Thomas, Strathroy, Dorchester, Ilderton, Komoka, Lucan, and Byron. Since 2026 it has been part of the Jayden's Mechanical family. You can reach the shop at (519) 455-7330.
Do you offer same-day or emergency furnace repair in London?
Yes. Winter breakdowns can't wait, so we prioritize no-heat and no-AC calls across London and the surrounding area, including after-hours and weekends when the weather demands it. Call (519) 455-7330 and we will tell you the earliest window.
Are you still the same Poulsen company from Clarke Road?
Yes. We have been on Clarke Road since 1991, and we joined the Jayden's Mechanical family in 2026. The same licensed technicians, the same shop, and the same standards, now with a wider crew and more equipment brands behind us.
Do you service areas outside London?
We serve London and the surrounding communities including St. Thomas, Strathroy, Dorchester, Ilderton, Komoka, Lucan, and Byron. If you are unsure whether we cover your address, call us and we will confirm.
Should I repair or replace my furnace?
It depends on the age, the repair cost, and the efficiency of what you have. As a rule, if a furnace is past 15 years and the repair is more than half the cost of a new high-efficiency unit, replacement usually pays back in lower bills. We give you the honest numbers either way.
What brands do you install and service?
We install and service major brands including Carrier, Trane, KeepRite, Lennox, and others. Being part of the Jayden's Mechanical family gives us access to a wider range of equipment and financing options than before.
Do you help with heat pump and rebate paperwork?
Yes. Cold-climate heat pumps qualify for Ontario rebates in 2026, and we handle the sizing, the installation, and the paperwork so the rebate is straightforward for you.

Tell us what's going on

Send a few details and we will call you back, usually within the hour during business hours. For no-heat or no-AC emergencies, call us directly.

(519) 455-7330
Licensed technicians 24/7 emergency repair 35 years in London

We reply within the hour during business hours.

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