The verdict in three sentences
For a 45-employee HVAC contractor that wants to move from one-off jobs to commercial maintenance contracts, a website built for professional buyers costs EUR 6,000 to 13,000 excl. VAT (about USD 6,500 to 14,000) in 2026, delivered in 7 weeks. The pages that convert are references sorted by building type, certifications (in France RGE, QualiPAC and Qualibat; in New York the EPA 608 and local licensing equivalents) and a maintenance contract page with scope and response times. A single average maintenance contract, worth EUR 6,000 to 30,000 a year, pays back the site in under two years.
The pages that get a facility manager or property manager to sign
A clinic's technical director, an office portfolio manager or a building manager does not search for "cheap air conditioning". They want a provider able to run a building management system, meet energy regulations and respond within 4 hours. Each page has to prove it.
| Page | What it proves | Observed effect on conversion rate (2026 order of magnitude) |
|---|---|---|
| Certifications (RGE, QualiPAC, Qualibat, refrigerant handling) | Compliance and eligibility for incentives | +20 to 35% qualified requests |
| References by building type (offices, healthcare, education, retail, industry) | Experience on a comparable case | +30 to 50% |
| Maintenance contract (energy, preventive, full cover, response times, on-call) | Clear, quantified commitment | +25 to 40% on maintenance requests |
| Energy regulation and BMS | Regulatory and energy expertise | +10 to 20% with property managers |
| Request form with floor area, building type, equipment | Leads sorted at entry | Qualification time halved |
| Careers page (refrigeration technicians) | Capacity to handle the workload | Indirect, reassures on continuity |
A useful reference fits in 150 words: building, floor area, equipment installed, measured energy gain, contract length. Ten well-written references beat fifty photos of rooftop units.
The standard 2026 quote
| Item | Range excl. VAT | Comment |
|---|---|---|
| Scoping workshop and site map | EUR 800 to 1,500 | Targets, offers, user journeys |
| Custom design (12 to 20 templates) | EUR 1,800 to 3,500 | Desktop and mobile mockups |
| Development and CMS | EUR 2,000 to 4,500 | Filterable reference pages |
| Writing 10 to 15 references | EUR 900 to 2,000 | Interviews with project managers |
| Local SEO | EUR 500 to 1,500 | Google Business Profile, service area pages |
| Total | EUR 6,000 to 13,000 | Delivered in 7 weeks |
On acquisition, keywords such as "commercial HVAC maintenance" or "business heat pump service contract" cost EUR 3 to 7 per click on Google Ads in a regional French market (often double that in New York). With a 4% conversion rate and 20% of requests turning into contracts, a signed contract costs roughly EUR 400 to 900 in ads.
Mini case study
Julien, managing director of a 45-employee HVAC contractor in Toulouse, earns 70% of revenue from one-off jobs. He invests EUR 9,500 excl. VAT in a website with 12 references and EUR 800 per month in Google Ads.
The site generates 9 qualified maintenance requests per month. At 20% conversion, that is about 21 contracts over 12 months, at EUR 12,000 a year on average: EUR 252,000 of recurring revenue. At a 25% margin, annual margin reaches EUR 63,000, for a total first-year cost of 9,500 + 9,600 = EUR 19,100. The site pays for itself from the second contract.
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FAQ
How much does a commercial HVAC contractor website cost in 2026?
Budget EUR 6,000 to 13,000 excl. VAT for a custom site with references and local SEO. A basic brochure site starts around EUR 3,500 but converts commercial buyers poorly.
How many references should we publish?
Ten to fifteen references covering 4 or 5 building types are enough at launch. Add one per month to feed search rankings.
Is Google Ads profitable for HVAC maintenance?
With clicks at EUR 3 to 7 and contracts of at least EUR 6,000 a year, yes, provided traffic lands on a dedicated maintenance page rather than the homepage.
Should contract prices be displayed?
Show ranges by building type or installed capacity. Buyers compare 3 quotes, and a clear range filters out irrelevant requests.
How long until the site is live?
Seven weeks on average, including 2 weeks to collect references and photos from project managers.
Let's scope your project. Tell us your building types, certifications and maintenance contract target, and we will price a website between EUR 6,000 and 13,000 excl. VAT, deliverable in 7 weeks. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
