Heat pump installation · Canada

Heat pump installation in Canada: the complete step-by-step process for 2026

Most Canadian heat pump installs run 8–12 weeks from first quote request to a working system, with on-site installation taking 1–3 days. The variance comes from EnerGuide audit scheduling and federal Greener Homes Loan approval — installation itself is fast, but the rebate paperwork drives the calendar. This guide walks every step of the process: assessment, Manual J sizing, choosing an installer, the EnerGuide audit, applying for rebates, install day, commissioning, and the post-retrofit verification that releases your final loan funds.

The realistic timeline (8–12 weeks)

Two timelines run in parallel. The "fast" timeline applies if you're paying cash and skipping federal financing: assessment week 1, quote week 1, install week 2–3, done. The "Loan" timeline adds the EnerGuide audit and Loan approval steps, which extend total time to 8–12 weeks. Both are normal — pick based on whether the federal interest-free financing matters for your cash flow.

Timeline Cash install Greener Homes Loan install
Initial assessmentWeek 1Week 1
Manual J + written quoteWeek 1Week 1–2
Pre-retrofit EnerGuide auditWeek 2–3
Loan + rebate applicationsWeek 3–4
Loan approvalWeek 6–10
InstallationWeek 2–3Week 8–11
Commissioning + walkthroughSame day as installSame day as install
Post-retrofit EnerGuide auditWeek 9–12
Final Loan disbursementWithin 30 days of audit

Step 1 — Initial assessment and system-type decision

Before any installer can quote, you (or they) need to decide what category of heat pump to install. Most assessments take 30–60 minutes either virtually (photos + measurements you provide) or in person.

Four primary categories:

  • Ducted air-source (central) — if you have existing forced-air ductwork from a gas or oil furnace. The heat pump indoor coil replaces or sits atop the existing furnace cabinet. Lowest disruption, lowest install cost in most provinces.
  • Ductless mini-split (single or multi-zone) — for homes without ducts, or for retrofit installs where adding ducts is impractical. Wall-mounted indoor heads, lines run to a single outdoor unit.
  • Multi-zone ductless — for whole-home coverage in ductless configurations. 2–5 indoor heads per outdoor compressor.
  • Geothermal (ground-source) — highest upfront cost, lowest operating cost, longest install. Requires land for a horizontal loop field or budget for a vertical bore. Best fit for long-term owners.

Climate zone shapes the decision too. In cold-continental Canada (most of Alberta, Saskatchewan, Manitoba, and Northern Ontario), you almost certainly need a cold-climate certified heat pump (CCHP) rated to -25°C minimum. In mild-coastal BC, a standard air-source heat pump is sufficient and cheaper.

Step 2 — Manual J load calculation

Sizing a heat pump correctly is the single most consequential technical decision in the entire install. Oversized = short-cycling, poor humidity control, reduced equipment life. Undersized = insufficient capacity on the coldest days, expensive backup heat dependency.

The correct method is the ACCA Manual J load calculation, run with your home's specific characteristics: square footage, ceiling height, window count and orientation, wall and attic insulation levels, air-leakage rate (from a blower-door test if available), and your climate zone's 99% winter design temperature.

The output is a heat-loss figure in BTU/h that determines the heat pump capacity (tonnage). For most Canadian homes, the result lands between 24,000 and 60,000 BTU/h — corresponding to 2-ton through 5-ton heat pumps. Manual J should be on the written quote as a line item. See our heat pump sizing guide for how to read the calculation and verify your installer used it correctly.

Step 3 — Get a written itemized quote

Quote quality predicts install quality. A vague quote ("3-ton heat pump installed: $14,500") is a red flag. A detailed quote lists every component, certifies the matched system, and pre-calculates rebates.

Every quote in our network includes:

  • Specific heat pump model (manufacturer, indoor and outdoor unit model numbers)
  • AHRI matched-system certificate number — confirms the indoor + outdoor combination is rated and qualifies for Greener Homes Loan
  • Manual J load calculation summary
  • Scope inclusions: electrical work, ductwork modifications, old equipment removal, refrigerant lines, thermostat, permit fees
  • Federal Greener Homes Loan estimated amount
  • OHPAP eligibility check and estimated amount (if oil-converting)
  • Provincial rebate(s) pre-calculated
  • Labour rate and crew composition
  • Warranty terms (manufacturer + installer workmanship)

Compare three quotes side by side. Our scam awareness guide covers the specific red flags to watch for.

Step 4 — Pre-retrofit EnerGuide audit

Required for federal Greener Homes Loan eligibility. Skip this step if you're paying cash and not pursuing the federal loan.

The audit takes 2–4 hours in-home plus a written report typically delivered within 1–2 weeks. The energy advisor does a full home assessment including a blower-door test for air leakage, an infrared scan for thermal bridging, an inventory of heating/cooling/water-heating equipment, and a calculated heat-loss requirement.

Cost: $500–$800 pre-retrofit. Up to $600 reimbursed after the retrofit is completed. The energy advisor must be NRCan-registered and must be independent of your installer (cannot be the same business). NRCan publishes a searchable registry of certified service organizations.

Detail in our Greener Homes Loan 2026 guide.

Step 5 — Apply for federal Loan, OHPAP, and provincial rebates

With the EnerGuide pre-retrofit report and installer's written quote in hand, submit the federal Greener Homes Loan application through the NRCan portal. Initial approval decision: 4–8 weeks.

If you currently heat with oil and meet OHPAP income thresholds, submit the OHPAP application at the same time — same portal, same supporting documents. OHPAP funds are paid directly to your installer at install rather than reimbursed to you.

Submit provincial program applications in parallel. Most provinces share the same EnerGuide audit data so the documentation overhead is minimal. Our provincial rebate stacking guide has the application path for each province.

Reputable installers handle this paperwork for you. You're not on your own with a federal portal — your installer will submit applications on your behalf with your authorization.

Step 6 — Schedule installation and prepare the site

Once Loan approval arrives, confirm the install date with your installer. Most installers schedule 4–8 weeks out depending on capacity and season.

Site prep is minimal but matters:

  • Clear ~6 feet of working space around the existing furnace or AC location
  • Clear access to the outdoor unit location (typically beside the house, at least 18 inches from the foundation)
  • Clear access to the electrical panel
  • Decide on outdoor unit placement — your installer will recommend based on noise (avoid bedroom-window proximity), snow clearance (elevated in cold provinces), refrigerant line length (shorter is more efficient), and aesthetics (avoid the most visible elevation if possible)
  • Plan for 1–3 days without heating or cooling depending on system. Shoulder seasons (March–May, September–November) minimize comfort impact

Installers bring all materials including refrigerant, line sets, electrical disconnect, breaker, mounting hardware, and concrete or wall-bracket pad. You don't need to source anything.

Step 7 — Installation day

The install crew (typically 2–3 technicians) arrives early morning. A typical day:

  1. 0800–0900: Site walkthrough with the lead technician. Confirm outdoor unit placement, indoor head locations (ductless), and electrical panel access.
  2. 0900–1100: Remove old equipment. Furnace lifted and hauled out. AC condenser disconnected, refrigerant recovered, unit removed. Oil tank decommissioning (if applicable): pump remaining oil, cut and cap supply line, remove tank to recycler.
  3. 1100–1400: Install indoor unit. Ducted: mount new indoor coil in furnace cabinet, connect to existing supply and return ducts. Ductless: mount wall heads, drill 3-inch ports through exterior walls for refrigerant lines and condensate.
  4. 1400–1600: Install outdoor condenser. Place on concrete pad or elevated wall bracket. Run refrigerant lines from indoor to outdoor unit. Install electrical disconnect and run new 240V circuit from panel.
  5. 1600–1700: Evacuate refrigerant lines with vacuum pump to remove moisture. Charge refrigerant from outdoor unit's factory charge plus top-up for line length.
  6. 1700–1800: Power on, run through heating and cooling modes, verify operation. Install thermostat, configure setpoints. Walkthrough with homeowner.

Ductless multi-zone installs add ~4 hours per additional indoor head. Oil-to-heat-pump conversions add ~2 hours for tank decommissioning. Geothermal installs are 5–10 days because of ground loop installation.

Step 8 — Commissioning and homeowner walkthrough

Commissioning is the verification step before you sign off. The installer should:

  • Run heat mode at full capacity. Verify outdoor unit temperature differential and indoor air temperature rise.
  • Run cool mode at full capacity. Verify refrigerant pressures match manufacturer spec for outdoor air temperature.
  • Trigger and verify defrost cycle.
  • Check airflow at every register (ducted) or every indoor head (ductless).
  • Configure thermostat including dual-fuel balance point if applicable.
  • Register manufacturer warranty (must be done within 60-90 days or warranty lapses).
  • Provide commissioning report documenting all readings for your records.

Walkthrough covers controls, filter change schedule (every 1–3 months depending on filter type), what's normal vs. concerning sound levels, what to do for power outages, and how to contact the installer for warranty issues.

Step 9 — Post-retrofit EnerGuide audit and final Loan disbursement

Within 18 months of Greener Homes Loan approval (ideally within 30 days of install for clean documentation), the same energy advisor returns for the post-retrofit audit. They verify the equipment was installed to specification, the home's EnerGuide rating has improved, and that all loan conditions were met. Post-retrofit audit is faster (1–2 hours) and typically costs $300–$500.

After NRCan accepts the post-retrofit report, final Loan funds are released within 30 days. If your installer requested partial payment via the loan at install (common), the final disbursement covers the balance. If your installer was paid upfront via OHPAP grant + provincial rebates, the Loan funds reimburse your out-of-pocket portion.

What can go wrong (and how to avoid it)

Quotes that omit electrical or ductwork scope

The most common install surprise is a "change order" mid-install for electrical panel upgrade or ductwork modifications. Fix: require the quote to itemize all four hidden-cost categories (electrical, equipment removal, ductwork, outdoor pad) as line items even if the cost is $0.

Wrong-sized equipment

Oversized heat pumps short-cycle and provide poor humidity control. Undersized heat pumps rely on backup heat in cold weather, destroying the operating-cost case. Fix: insist on Manual J — and verify the design temperature used matches your specific city (not provincial average).

Refrigerant charge errors

Under- or over-charged refrigerant reduces efficiency by 10–25% and shortens compressor life. Fix: require the commissioning report to include refrigerant subcool and superheat measurements taken after charging.

Outdoor unit placement issues

Common mistakes: ground-level mounting in deep-snow provinces, placement too close to bedroom windows, placement on the noisy side of a duplex shared wall. Fix: discuss outdoor placement during the assessment, not on install day.

Missed warranty registration

Most manufacturer warranties require registration within 60–90 days of install. Fix: confirm the installer registers the warranty as part of commissioning and provides you the registration confirmation.

Get started with a written quote

Step 1 in the process is the in-home or virtual assessment. The fastest way to get there is the quote form. Your details go to one licensed installer in your province with capacity for new work. You'll have a written itemized quote within 24 hours that includes the AHRI certificate, Manual J approach, and rebate pre-calculation.

Get a free quote within 24 hours


Sources

This guide is updated quarterly against current Natural Resources Canada program documentation and our partner-network install data. Last full source check: 2026-05-25.