Combi Boiler Installation and Replacement
One high-efficiency unit for home heat and hot water
Replacement estimates are free.
0% APR for up to 60 months with approved credit.
Licensed MI #7109194 · Family-owned since 1986
Your Local HVAC Team in Monroe County
A combi (combination) boiler heats your home and makes hot water on demand in one wall-mounted unit, freeing up the space an old boiler and water tank used to take. J&K Heating & Cooling installs and repairs combi boilers across Monroe County and Downriver, including replacements for old cast iron and oil-fired boilers.
Signs Your Combi Boiler System Might Need to be Replaced
- Your Boiler and Water Heater Are Both Aging
- You Want to Free Up Basement Space
- You're Converting From Oil to Natural Gas
- You Want a High-Efficiency Unit
A combi boiler can be a smart upgrade when your boiler and water heater are both getting old. Consider one if any of these fit your home.
Licensed & Insured
Expert HVAC pros, fully covered for your peace of mind.
Family-Owned Since 1986
Personal service you can trust.
24/7 Emergency Service
We’re here whenever your system lets you down, subject to on-call technician availability.
Flexible Financing
Budget-friendly payment plans with approved credit.
Choosing The Right Combi Boiler System For Your Home
We check your heating load, how much hot water your household uses at once, your gas supply and your venting options. Then we remove the old boiler and water tank and install the combi with new venting and controls. Before we leave, we test the heat and hot water and show you how to use it.
Installation estimates are free. Call 734-587-3184 to set one up.
Ask Us About Scheduling Your Service
Why Choose J&K For Your Combi Boiler Installation
A combi boiler has to be sized for both heating and hot water, and vented, piped and set up correctly to run efficiently. As the boiler company other contractors call, we size, install and service combi boilers with the whole system in mind. J&K is licensed (MI #7109194) and family-owned in Monroe since 1986.
- Sized for Your Heating and Your Hot Water
- Oil-to-Gas Conversions
- Repairs on Existing Combi Boilers
- Family-Owned in Monroe Since 1986
Frequently Asked Questions
Most gas boiler replacements cost $6,500 to $10,000 installed, with higher-efficiency units like combis toward the upper end. Multi-zone systems and venting or gas line changes can cost more. We quote every job on site.
Combis work best where one or two hot water taps run at the same time. Larger homes with heavy hot water use may be better served by a boiler with a separate water heater. We will recommend what fits.
Yes, if natural gas is available at your home. We remove the oil boiler and install a gas combi with new venting. Ask us about your oil tank during the estimate visit.
Yes. Common combi problems include low pressure, no hot water, error codes and ignition faults. We service every major brand.
A service call is $110, or $175 after hours, and covers the trip to your home. Diagnostic work and any repairs are added on top, and you approve the price before we start. Members of our ESA maintenance plan pay $0 for service calls. If you decide to replace your boiler instead, the replacement estimate is free, and we credit your service call and diagnostic fees toward the new boiler.
Yes. We offer financing options on new systems, subject to credit approval.
CONTACT US NOW
EXPIRES: 02/28/2027
Free Smart Thermostat With New Install
Control comfort from your phone and save up to ten percent on your monthly bill.
Terms & conditions may apply. Ask for details when scheduling service.
Get in Touch
Need HVAC Help? Let’s Talk Today
By submitting, you authorize J&K Heating and Cooling to reach out via phone, email, or text for explicit information about project needs. We will never share your personal information with 3rd parties for marketing purposes or spam you. You can opt out at any time. Message/data rates apply. Consent is not a condition of purchase.
Other Combi Boiler Services
Combi Boiler Maintenance
Combi Boiler Repair
