# Heat Pump Refrigerant Leak Repair Toronto | Toronto Heat Pump Pros

> Heat pump refrigerant leak repair in Toronto, ON. Leak search, nitrogen test, R410A, R32, R454B certified. $300-$1,200. Call (647) 277-5401.

URL: https://torontoheatpumppros.ca/heat-pump-refrigerant-leak-repair-toronto/

Ontario Rebates Up to $14,100

# Find and Fix Heat Pump Refrigerant Leaks, Not Just Top Up

Last updated: October 24, 2026

Leak located, repaired and pressure-tested before recharge. Certified for R410A, R32 and R454B.

-   Electronic and bubble leak search
-   Nitrogen pressure test after repair
-   Deep vacuum and weighed-in charge
-   R410A, R32, R454B certified

Diagnostic first, written quote second From $300

Request a Free Load Calculation + Quote

[/contact/ →](/contact/)

 

Call 24/7: (647) 277-5401

[tel:+16472775401 →](tel:+16472775401)

Paperwork submitted5-day turnaroundNo subcontractors

![Technician using an electronic leak detector at a flare fitting behind a ductless head](/images/misc/technician-using-electronic-refrigerant-leak-detec.webp)

**$780 installed** Liberty Village, Toronto

\-30C Rated Cold Spec

-   17+ Years Combined
-   Red Seal + TSSA + ESA + HRAI
-   Rebates to $14,100
-   Mitsubishi + Daikin + Fujitsu Certified
-   24/7 Emergency Repair

Heat pump refrigerant leak repair in Toronto. Low charge means a leak. A heat pump is a sealed system, so it doesn’t “use up” refrigerant. Topping up without finding the hole is money down the drain. We locate the leak, repair it, nitrogen pressure test, pull a deep micron vacuum and weigh in the charge. $300-$1,200 depending on location and refrigerant. Certified for R410A, R32 and R454B.

## Signs your heat pump has a leak

-   Heating or cooling getting weaker over weeks
-   **Ice or frost** on the indoor refrigerant lines or a heavily iced outdoor coil
-   Longer run times and a higher hydro bill
-   **Hissing** at the outdoor unit or a head
-   An **oily stain** at a flare, joint or valve
-   Another company “topped it up” and it came back

## Where do leaks happen?

| Location | How common | Notes |
| --- | --- | --- |
| Flare connections (ductless heads) | Most common | Under-torqued or cracked flares |
| Brazed joints | Common | Poor braze, no nitrogen purge |
| Indoor or outdoor coil | Moderate | Corrosion on older units |
| Service valves / cores | Less common | Easy fix once found |

## How do we find it?

An electronic leak detector first, then a bubble test at every suspect fitting, then a hands-and-eyes inspection for oil trace, which shows up where refrigerant oil escapes. On hard cases, a nitrogen standing pressure test isolates sections of the system. Most leaks on multi-zone and mini-split systems turn out to be at a flare.

## How is it repaired properly?

1.  Refrigerant recovered
2.  Leak repaired: re-flared, re-brazed under nitrogen, or component replaced
3.  **Nitrogen pressure test**, held long enough to prove it
4.  **Micron vacuum** to pull out air and moisture
5.  Charge **weighed in** to spec, then verified with superheat and subcooling

This is the same standard as a new install, and it’s done under CSA B52 practice by ODS-certified techs.

## Liberty Village case

Condo-townhome mini-split losing heat every few weeks after another company topped it up twice. We traced the leak to a cracked flare at the indoor head. Re-flared, pressure-tested, recharged by weight. $780, one visit.

## Repair or replace?

Leaks on corroded coils in older R410A units tend to come back, and R410A keeps getting pricier under the phase-down. If that’s your situation, we put a 

heat pump replacement

[/heat-pump-replacement-toronto/ →](/heat-pump-replacement-toronto/)

 price next to the repair. Regular 

maintenance

[/heat-pump-maintenance-toronto/ →](/heat-pump-maintenance-toronto/)

 catches slow leaks before they cost you a winter.

Our 

Toronto heat pump

[/ →](/)

 crews run leak repairs across 

downtown Toronto

[/service-areas/toronto-central/ →](/service-areas/toronto-central/)

 and 

Etobicoke

[/service-areas/etobicoke/ →](/service-areas/etobicoke/)

. For other faults see 

heat pump repair

[/heat-pump-repair-toronto/ →](/heat-pump-repair-toronto/)

, or 

book a leak search

[/contact/ →](/contact/)

.

The Problem

## What goes wrong with refrigerant leak in Toronto

**1\. Weak heat, rising bills** A low charge makes the unit run longer for less output.

**2\. Icing on the lines** Ice on the coil or line set is a classic sign of low refrigerant.

**3\. Topping up without fixing** Adding gas without finding the leak is a short-term patch that repeats every season.

Ontario Rebate Stack

## How much can rebates take off the invoice?

Two programs stack on eligible homes. We book the audits, fill both applications and submit them on your behalf. 40-60% of install cost is commonly offset.

Program 1

### Enbridge HER+

up to $7,100

Cold-climate heat pump replacing gas heat. Pre-retrofit audit first.

Program 2

### Home Renovation Savings Program

$5,000-$10,000

By efficiency tier and household income. Listed equipment only.

Combined

### Stacked total

up to $14,100

Pre-retrofit audit $400-$600, refunded upon install. Post-audit after commissioning.

1.  **1\. Pre-audit** booked before install day. Skip it and the file is usually dead.
2.  **2\. Install** a NEEP / NRCan listed cold-climate model, sized by Manual J.
3.  **3\. Post-audit + file.** We submit HER+ and HRSP for you and track the cheque.

Rebates are "up to" amounts, depend on program terms, audits, equipment listing and household eligibility, and are never guaranteed. 

Full rebate breakdown

[/ontario-heat-pump-rebate-2026/ →](/ontario-heat-pump-rebate-2026/)

.

Written Manual J

## Why do we run a Manual J before any quote?

Because tonnage decides everything else. Comfort at -25C, hydro bill, compressor life, rebate eligibility. A written Manual J heat loss calc per HRAI standard comes first, then Manual S equipment selection, then the price. Free, and yours to keep.

Manual J Manual S Manual D when needed HRAI standard

-   Repair-or-replace in writing If the unit is old R410A and the repair crosses the threshold, you get both prices on paper.
-   Sizing recheck on replacement Plenty of older Toronto units were oversized. Manual J tells us before we order the new one.
-   No surprise scope Diagnostic first, written quote second, work third. Nothing starts without your sign-off.

## Planning refrigerant leak? Start with the load calc.

Free written Manual J, model numbers and the rebate math on one page. Then decide.

Get Free Load Calc

[/contact/ →](/contact/)

 

(647) 277-5401

[tel:+16472775401 →](tel:+16472775401)

Why Us

## What sets our refrigerant leak work apart

01

### Fix, not top up

We find the leak before adding refrigerant. Topping up a leak is money down the drain.

02

### R410A, R32, R454B certified

ODS certified and trained on the newer refrigerants.

03

### Proven with nitrogen

Every repair pressure-tested before refrigerant goes back in.

04

### Honest on old units

On older R410A systems, we tell you when replacement makes more sense.

How It Works

## How refrigerant leak works, step by step

Phone answered 24/7. Most repairs finish on the first visit because the common parts ride on the truck.

1.  01
    
    ### Confirm low charge
    
    Pressures, superheat and subcooling measured. Low charge always means a leak somewhere.
    
2.  02
    
    ### Find the leak
    
    Electronic detector, bubble test and oil-trace inspection at flares, brazed joints, coils and valves.
    
3.  03
    
    ### Repair
    
    Re-flare, re-braze under nitrogen, or replace the leaking component. Quoted before work.
    
4.  04
    
    ### Prove it
    
    Nitrogen standing pressure test, then a deep micron vacuum.
    
5.  05
    
    ### Weigh in the charge
    
    Refrigerant charged by weight to the manufacturer spec, then verified with readings.
    

Project Case Study

## Heat Pump Refrigerant Leak Repair in Liberty Village, near Liberty Village Park

![Frosted suction line at a mini-split head before the leak repair](/images/misc/frosted-suction-line-and-weak-airflow-at-mini-spli.webp) Before

![Same mini-split head running normally after the leak repair](/images/misc/same-mini-split-head-running-normally-with-warm-ai.webp) After

Liberty Village, near Liberty Village Park

Condo-townhome mini-split losing heat every few weeks after another company topped it up twice. Leak traced to a cracked flare at the indoor head. Re-flared, pressure-tested, recharged by weight.

Materials

New flare fittings, nitrogen test, R410A weighed charge

Home size

Single-zone mini-split

Turnaround

One visit

Installed price

$780 installed

Project brief illustrative of a typical job in this neighbourhood. Your price depends on your Manual J and site conditions.

Our Work

## Recent refrigerant leak jobs around the GTA

Click any photo to enlarge.

Liberty Village: cracked flare re-made.

Standing nitrogen test before any refrigerant.

Charge weighed in, not guessed.

Oil stains point to the leak.

Proven Results

## Toronto homeowners on our refrigerant leak work

Real installs across Toronto neighbourhoods. Rebate captures and winter performance in the owners' own words.

> "Called at 8am with ice all over the outdoor unit. Tech had the defrost board on the truck. Heat back before lunch."

MRMarco R., Little Italy$620 Daikin defrost board repair

> "Old unit died in January. New Fujitsu was running in two days and they actually downsized it after the load calc. Bills went down."

SLSandra L., Willowdale$13,900 Fujitsu cold-climate replacement

> "Converted our Rosedale home from oil to Mitsubishi Hyper-Heat in October. Two winters, zero backup heat needed. Enbridge HER+ Oil-to-HP bonus came through at $7,100 and HRSP added $4,800. Combined covered 65% of the project."

DKDaniel K., Rosedale$18,500 Mitsubishi Hyper-Heat 4-ton + oil tank removal

> "Our board approved on first submission. Six residents replaced PTACs the first month and the board scheduled a bulk upgrade after that."

PMPriya M., Harbourfront$5,400 PTAC replacement, Fujitsu wall unit, 42-unit building

> "Enbridge + HRSP rebates covered 55% of install cost. Dual-fuel thermostat switches to gas below -18C, we barely notice any difference in bills."

JTJennifer T., Leaside$14,200 Daikin Fit 3-ton dual-fuel hybrid

Reviews shown are from customer projects. Individual results and rebate amounts depend on program terms and household eligibility.

Direct Answers

## Heat Pump Refrigerant Leak Repair Toronto FAQ

Still have a question?

Phone answered 24/7. Written answers via the form within one business day.

(647) 277-5401

[tel:+16472775401 →](tel:+16472775401)

Ask in writing

[/contact/ →](/contact/)

How much does refrigerant leak repair cost in Toronto?

$300-$1,200 depending on where the leak is, how hard it is to reach, and which refrigerant the system uses. Price is quoted before work starts.

Can't you just recharge it?

A heat pump is a sealed system. Low charge means a leak. Recharging without fixing it buys a few weeks and costs you the refrigerant again.

How do I know my heat pump is low on refrigerant?

Weak heating or cooling, ice on the indoor lines or outdoor coil, longer run times, hissing, or an oily stain at a fitting. A tech confirms with pressures and superheat.

Where do heat pump leaks usually happen?

Flare connections on ductless heads are the most common, then brazed joints, coil corrosion, and service valve cores.

Which refrigerants do you work with?

R410A, R32 and R454B. Our techs are ODS certified and follow CSA B52 practice.

Should I replace instead of repairing a leak?

If the unit is older R410A and the leak is in a corroded coil, or it keeps coming back, replacement often makes more sense. We price both.

Keep Exploring

## Related Services

![Service technician diagnosing an iced heat pump outdoor unit with the access panel open](/images/misc/service-technician-in-navy-jacket-kneeling-at-iced.webp)

From **$150**

### Heat Pump Repair Toronto

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[Heat Pump Repair Toronto →](/heat-pump-repair-toronto/)

![Two technicians carrying a new cold-climate heat pump outdoor unit to a pad beside a Willowdale house](/images/misc/two-technicians-carrying-new-fujitsu-cold-climate-.webp)

From **$10,000**

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### Heat Pump Maintenance Toronto

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View details

[Heat Pump Maintenance Toronto →](/heat-pump-maintenance-toronto/)

GTA Coverage

## Refrigerant Leak near you

Same crews, same 5-day turnaround. Refrigerant Leak is booked most often in these service areas.

Heat Pump Toronto CentralRiverdale, Cabbagetown, YorkvilleView area

[/service-areas/toronto-central/ →](/service-areas/toronto-central/)

 

Heat Pump EtobicokeMimico, The Kingsway, Humber Bay ShoresView area

[/service-areas/etobicoke/ →](/service-areas/etobicoke/)

![](/images/hero/toronto-brick-semi-detached-house-at-dusk-in-light.webp)

24/7 phone. Same-day no-heat dispatch.

## Ready to price refrigerant leak?

Free written Manual J, model numbers and an installed price for heat pump refrigerant leak repair in Toronto. We file the rebate paperwork.

Request a Free Load Calculation + Quote

[/contact/ →](/contact/)

 

Call 24/7: (647) 277-5401

[tel:+16472775401 →](tel:+16472775401)

-   Rebate paperwork submitted for you
-   Workmanship warranty + manufacturer parts coverage
-   Red Seal, TSSA, ESA, HRAI in-house