Combi Boiler Installation Service
Combi Boiler Installation Service in Greater Vancouver
A combination boiler heats your home and supplies hot water on demand from one compact, wall-hung unit, with no separate storage tank to take up space or lose heat. Done correctly, it is an efficient, space-saving upgrade, but the result depends entirely on careful sizing and a clean, code-compliant installation. ROMA Heating & Cooling has provided combi boiler installation services across the Lower Mainland since 1999, and our gas-licensed (TSBC) technicians manage the whole job from assessment to commissioning. This page explains exactly what our installation service includes and how we get it right the first time.
What’s Included in Our Installation Service
Our combi boiler installation is a complete, managed service, not just hanging a unit on the wall:
- Home and demand assessment — we review your hot-water usage, water supply, existing pipework, and venting route.
- Correct sizing — we match the unit to your peak fixture demand and incoming flow.
- Safe removal — we decommission and remove the old boiler, and the tank and cylinder if converting.
- Code-compliant install — pipework, gas connection, and venting completed to TSBC standards.
- Commissioning — gas pressure, combustion, and system pressure checked, with full heating and hot water verified.
- Warranty and handover — we register the warranty and walk you through the controls and maintenance.
Why Correct Sizing Is Critical
The most common cause of disappointment with a combi boiler is poor sizing. A combi heats water as it flows, so its real-world performance is governed by flow rate and your home’s demand. Before recommending a unit we establish:
- How many bathrooms and taps may run at the same time.
- Your incoming water flow and pressure, which cap a combi’s output.
- Whether you are replacing a boiler or converting from a tank system.
- Where the unit can be located and safely vented.
Homes that frequently run several showers at once may need a carefully sized combi or a different system, and we will tell you honestly which fits.
Our Step-by-Step Installation Process
| Stage | What Happens |
|---|---|
| 1. Assessment | Survey home, demand, water supply, pipework, and venting |
| 2. Recommendation | Size the unit and provide a clear quote and timeline |
| 3. Removal | Safely remove the old boiler (and tank, if converting) |
| 4. Installation | Fit the new unit, adapt pipework, gas, and venting to code |
| 5. Commissioning | Check gas, combustion, and pressure; verify heat and hot water |
| 6. Handover | Register warranty and explain controls and maintenance |
Common Installation Scenarios We Handle
- Like-for-like boiler replacement — swapping an aging combi for a high-efficiency model.
- Tank-to-combi conversion — removing a boiler, cylinder, and tank, then re-running pipework.
- Boiler relocation — moving the unit to free up space, with new venting and pipework.
- New high-efficiency upgrades — replacing an old, inefficient boiler to cut gas use.
Same-Day Emergency Service Across Metro Vancouver
When an old boiler fails, a replacement can be urgent, and a household without heat or hot water cannot wait. ROMA offers same-day and after-hours boiler service across Metro Vancouver, including Vancouver, Burnaby, Surrey, Richmond, Coquitlam, New Westminster, and the North Shore. We prioritise no-heat and no-hot-water calls and can advise quickly on repair versus replacement so you are back up and running fast. To reach a technician now, call (604) 704-0300.
Why Greater Vancouver Homeowners Choose ROMA
- Serving the Lower Mainland since 1999, headquartered in Burnaby
- Gas-licensed (TSBC), insured technicians who install to code and commission properly
- Honest sizing based on your real hot-water demand
- High-efficiency combi boilers with rebate and financing guidance
- Same-day and after-hours service when heat or hot water fails
Converting From a Tank System to a Combi
Switching from a traditional boiler-and-cylinder setup to a combi is one of the most rewarding upgrades, but it is also the most involved, and it is where experience shows. Removing the old boiler, hot-water cylinder, and any cold-water storage tank frees up valuable space, often a whole closet, but the pipework that fed those components has to be re-routed and adapted for a single on-demand unit. Done carefully, the conversion is clean and the result is seamless; done hastily, it leaves problems behind the wall. We plan the route, sizing, gas supply, and venting before we start, so a conversion is a managed project with a clear scope rather than a surprise. We will also explain honestly when a combi is the right call for your home and when an alternative would serve you better.
Protecting Your Warranty and Efficiency
A new combi boiler is a high-efficiency appliance, and it only delivers that efficiency, and keeps its warranty intact, when it is installed and commissioned correctly. Commissioning is not a formality: we check gas pressure, combustion, and system pressure, confirm the unit modulates properly, and verify stable heating and hot water under real demand before we hand over. We then register the manufacturer warranty and document the installation. Proper commissioning is what separates a boiler that quietly performs for years from one that nags with faults, and it is a standard part of every installation we do. It also means that if you ever do need service, there is a clear record to work from.
After Installation: Service and Support
Our relationship does not end when the boiler fires up. A combi rewards a simple annual service that keeps it running efficiently and safely, protects the warranty, and catches small issues before they become breakdowns. Because we install and service these units, the same team that knows your installation can look after it, and if a fault ever does appear, we can respond quickly across Metro Vancouver. That continuity, from sizing through installation to ongoing care, is a large part of why Greater Vancouver homeowners trust us with the whole job rather than treating installation as a one-off transaction.
Choosing the Right High-Efficiency Combi
Not all combi boilers are alike, and matching the model to your home is part of the service. Beyond raw output, we consider how well a unit modulates to match demand, its efficiency rating, its hot-water flow performance, and its track record for reliability and parts availability in the Lower Mainland. A boiler that modulates smoothly runs more efficiently and more quietly than one that simply switches on and off, and choosing a model with readily available genuine parts means any future service is faster and simpler. We recommend high-efficiency condensing units that suit your demand and budget, and we explain the trade-offs plainly rather than steering you toward a single brand. The result is a boiler that is correctly sized, well matched to your home, and supported for the long term, which is exactly what makes an installation worth the investment.
What Our Customers Say
“My Viessmann Boiler 100-W stopped working on Wednesday. We called ROMA, the technician came on Thursday and found the issue.”
— Qiming Zhong, Google review (★★★★★)
“I had an issue with my combi boiler and called them. I left a message and received text messages and a call back.”
— M Lamb, Google review (★★★★★)
Frequently Asked Questions
What does a combi boiler installation service include?
Our service covers the full job: assessing your home and hot-water demand, sizing the right unit, safely removing the old boiler (and tank, if converting), adapting pipework, completing the gas connection and code-compliant venting, commissioning the boiler, and registering the warranty. You finish with a tested, documented installation and a walkthrough of the controls.
How long does a combi boiler installation take?
A like-for-like boiler replacement is often completed in a day. Converting from a tank-and-cylinder system or relocating the unit takes longer because of the additional pipework and venting changes. After assessing your home we give a clear timeline before starting.
Do you size the boiler to my home?
Yes, always. Combi performance depends on matching the unit to how many fixtures may run at once and to your incoming water flow and pressure. We assess this first so the boiler delivers steady heating and hot water rather than struggling under demand.
Will you handle permits and gas work?
Yes. Our technicians are gas-licensed (TSBC) and we install to code, handling the gas connection, venting, and commissioning. Correct, documented installation also protects the manufacturer warranty on your new combi boiler.
What if my old boiler fails suddenly?
A failed boiler can leave you without heat or hot water, so replacement is sometimes urgent. We offer same-day and after-hours service across Metro Vancouver and prioritise no-heat calls, and we can advise quickly on whether a repair or a combi replacement is the better path.
Related Heating Services
- Emergency Boiler Repair
- Boiler Not Heating
- Navien Boiler Repair
- Gas Boiler Troubleshooting
- Combi Boiler Error Code Repair
- Boiler Repair in Burnaby
Call ROMA Heating & Cooling Today
For fast, professional diagnosis and repair anywhere in Greater Vancouver, call (604) 704-0300 or email info@romaheating.ca. Same-day and after-hours service, gas-licensed and insured, serving the Lower Mainland since 1999.
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What Greater Vancouver Homeowners Say
“Nelson worked hard to get the NTI unit fixed. He was always polite, courteous and on time.”
“As always Nelson was super efficient. Showed up on time and was quick to work. I had a full maintenance done on the fireplaces and furnace. He was awesome. I won’t use anyone else.”
“Excellent service. Andy had a spare Carrier inducer with him which saved us time.”
“Was very prompt to respond to our issues. Technician was scheduled for the day following my initial call.”
“Very professional heating company. Price is reasonable, excellent work.”
“Highly recommend this company. It was a pleasure dealing with Shawn and Nelson.”
“Professional and courteous technicians with attention to detail and customer needs.”
“Always great, friendly service. Serviced the hot water on-demand system. Honest and informative. Thanks!”
“Speedy response time, honest, and professional service from start to finish.”
Why Greater Vancouver Trusts ROMA Heating & Cooling
ROMA Heating & Cooling has installed, repaired and maintained heating and cooling systems across Metro Vancouver since 1999. Our team are TSBC-licensed gas fitters (Gas LGA0202903) and Red Seal-trained technicians — licensed, bonded and insured — and we back every job with upfront, flat-rate pricing and a 100% satisfaction guarantee. We hold a 4.8★ rating from 221+ Google reviews.
- Authorized for 30+ brands (Lennox, Carrier, Viessmann, Navien, Rheem & more)
- Upfront flat-rate pricing — no overtime or hidden fees
- Free, no-obligation estimates on new installations
- Locally owned & operated in Burnaby, BC
No Hidden Fees
Our service rates are transparent and easy to understand. You approve upfront, flat-rate pricing before we start — so you never get a bill you didn’t expect.
Licensed & Bonded
ROMA is a TSBC-licensed gas contractor (Gas LGA0202903). Our technicians are bonded, insured and Red Seal-trained — qualified for any heating or cooling system.
Free Estimates
We offer free, no-obligation estimates on new installations — furnaces, boilers, heat pumps, air conditioners, tankless and hot-water tanks.
ROMA Heating & Cooling is a trusted HVAC contractor serving Metro Vancouver since 1999. We specialize in furnace repair, heat pump installation, boiler services, air conditioning, and emergency heating solutions for residential, commercial, and government clients. Available 24/7, our certified technicians deliver fast, reliable, and affordable HVAC services across Greater Vancouver.