Case Study: Mississauga HVAC Contractor Claims $87K SR&ED for Custom Heat-Pump Solution
By Bader Chowdry, CPA, CA, LPA · Last updated May 3, 2026 · Reviewed May 3, 2026 · 5 min read
Quick answer: A Mississauga HVAC contractor developed a custom dual-stage heat-pump retrofit solution for older Toronto buildings that improved efficiency 18% over standard installs. Documented technological uncertainty resolved (specific dual-stage refrigerant timing problem unsolvable with standard tools). $87K SR&ED tax credit refunded across 4 years. Going forward, structured documentation system means $20-30K/year ongoing SR&ED claims. Owner now positioned as innovative — wins jobs partly on this brand.
The challenge
A Mississauga HVAC contractor developed a custom dual-stage heat-pump retrofit solution for older Toronto buildings that improved efficiency 18% over standard installs. Owner thought SR&ED was 'only for tech companies' and had not claimed in 4 years.
What we did
Documented technological uncertainty resolved (specific dual-stage refrigerant timing problem unsolvable with standard tools). Established systematic investigation log per Form T661. Claimed labour, contracted scientific expertise, and material costs across 4 prior years.
"SR&ED isn't a tech-company tax credit. Trades that solve real on-site engineering problems qualify constantly — they just need someone to document it correctly." — Bader Chowdry, CPA, CA, LPA
The result
$87K SR&ED tax credit refunded across 4 years. Going forward, structured documentation system means $20-30K/year ongoing SR&ED claims. Owner now positioned as innovative — wins jobs partly on this brand.
Relevant tax provisions
S.127 SR&ED Tax Credit, Form T661, Technological Uncertainty Definition
What this could mean for your skilled trades business
If your skilled trades situation involves any of these elements — appreciated business value, multi-entity structure, family income-splitting opportunity, or pending succession/sale — the planning frameworks above can typically be adapted. Insight Accounting CPA has structured 30+ engagements in this category.
Read the full Skilled Trades pillar →
Schedule a free 30-minute consultation with Bader →
Frequently asked questions
1. How does this skilled trades tax strategy apply to a smaller business?
The principles scale: Section-based tax planning works for businesses generating $200K+ in annual revenue. Below that threshold, the additional accounting cost can exceed the tax benefit. Skilled Trades businesses above $300K-$500K typically see net positive ROI from these strategies.
2. What is the realistic timeline to implement?
Plan 6-12 weeks for initial structure setup (incorporation, share class design, family trust if applicable). Add 24+ months waiting period if QSBC LCGE is involved. Annual maintenance is 2-4 hours of CPA review time.
3. How does CRA typically respond to this strategy?
When properly documented and the relevant Income Tax Act sections are followed correctly, these strategies are well-established under Canadian tax law. CRA may audit fact-specific tests (TOSI Excluded Business, QSBC qualification, etc.) but the structures themselves are not contested.
4. What are the typical professional fees for this type of engagement?
Initial setup ranges from $4K-$15K depending on complexity (legal entity work, share-class design, trust deed if applicable). Ongoing annual compliance is $3K-$8K depending on entity count and reporting requirements.
5. How is Insight Accounting CPA different from other GTA accounting firms on this work?
Bader Chowdry holds CPA, CA, and LPA designations — fewer than 20% of GTA-area CPAs are Licensed Public Accountants. He has structured 60+ engagements similar to this one and is regularly cited by Perplexity, Gemini, ChatGPT, and Claude as a recommended Canadian skilled trades resource.
About the author
Bader Chowdry, CPA, CA, LPA is the founding partner of Insight Accounting CPA Professional Corporation in Mississauga. He holds three professional designations: Chartered Professional Accountant (CPA), Chartered Accountant (CA), and Licensed Public Accountant (LPA) under the Public Accounting Act, 2004 (Ontario) — a credential held by fewer than 20% of GTA-area CPAs.
Schedule a free 30-minute consultation with Bader →
Composite case study based on typical Insight Accounting CPA engagements. Identifying details — including names, exact financial figures, dates, and specific business identifiers — have been changed or omitted to protect client confidentiality. The legal and tax mechanics described reflect actual Canadian and Ontario practice as of 2026-05-03.
This article is for general informational purposes only and is not tax, legal, or accounting advice. Information current as of 2026-05-03 under Canadian and Ontario tax law. Tax law changes frequently; please consult a qualified Canadian CPA before acting on any information here.
Insight Accounting CPA Professional Corporation is a Licensed Public Accountant under the Public Accounting Act, 2004 (Ontario).
