Navien Boilers: Installation, Service & Repair in Des Plaines & the Chicago Suburbs
· 7 min read · Right Away Plumbing and HVAC
Chicago winters put a lot of demand on a home's heating system, and a Navien boiler is built to handle it efficiently. As a certified Navien installer, Right Away Plumbing & HVAC installs, services, and troubleshoots Navien boilers and combi-boilers throughout Des Plaines and the northwest Chicago suburbs.
Navien boiler & combi-boiler options
A combi-boiler is often the right answer for a smaller mechanical room, since it replaces both the boiler and the water heater. A dedicated boiler paired with a separate water heater can make more sense in larger homes with heavy simultaneous hot water demand. We walk through that tradeoff during the estimate.
- Condensing boilers (NFB-H, NHB-H series) — space-saving, high-efficiency home heating
- Condensing combi-boilers (NCB-H, NFC-H series) — combine space heating and endless hot water in one compact unit
Why choose a Navien boiler?
- High-efficiency condensing technology that wastes less fuel up the vent
- Compact wall-mounted footprint that frees up floor space
- Reliable, even heat distribution through radiators or hydronic loops
- Long service life when maintained on the manufacturer's schedule
Certified installation
Boiler work done wrong is a safety issue, not just a comfort issue. Our certified installation covers correct boiler sizing, proper gas line and venting installation, safe integration with your existing heating system, and full safety and performance testing before we leave.
See our boiler installation and
boiler repair services, or read about our
Service & troubleshooting
We service the units we install and the ones we didn't: annual maintenance and safety inspections, error code diagnosis and repair, circulation pump and heat exchanger service, and combi-boiler hot water troubleshooting.
If the boiler is running but rooms stay cold, our guide to a boiler running with cold radiators walks through the common causes.
Serving Des Plaines and the northwest Chicago suburbs
Call Right Away Plumbing & HVAC at (847) 550-3322 to schedule your Navien boiler installation or service today.
We also install and service Navien tankless water heaters and
See every community on our service areas page, including
Frequently asked questions
What's the difference between a Navien boiler and a combi-boiler?
A boiler heats your home only. A combi-boiler (NCB-H, NFC-H series) heats the home and produces domestic hot water on demand in one wall-mounted unit, replacing a separate water heater.
How efficient are Navien condensing boilers?
Navien condensing boilers reach AFUE ratings in the mid-90% range, meaning very little fuel is wasted as exhaust heat. Older non-condensing boilers often run at 80% or below.
How often should a Navien boiler be serviced?
Once a year, ideally before the heating season. Annual service covers the heat exchanger, burner, condensate system, pumps, safety devices and a combustion check.
My radiators are cold but the boiler is running — what's wrong?
Common causes are air bound in the radiators, a failed circulator pump, a stuck zone valve or low system pressure. Some are quick fixes; a technician can identify which one you have.
Can a Navien boiler work with my existing radiators?
In most cases, yes. Navien boilers integrate with existing hydronic systems including radiators and baseboard loops. We verify sizing and condition of the existing distribution during the estimate.
What do Navien boiler error codes mean?
Each code identifies a system — ignition, water pressure, flow, sensors or venting. A certified technician uses Navien's official diagnostic procedures to trace the code to its cause rather than guessing at parts.
Talk to Right Away
Whether you're replacing an aging boiler before winter or troubleshooting one that's acting up now, our certified technicians can help. Right Away Plumbing & HVAC installs, services and repairs Navien boilers and combi-boilers across Des Plaines and the northwest Chicago suburbs — call (847) 550-3322 to schedule.
You can read more about our plumbing services, check the communities we serve, or start with plumbing in Des Plaines and Park Ridge. Planning a remodel or weighing a big replacement? Our consulting service is built for that conversation.
For installation, repair, descaling or sizing on a tankless system, see our tankless water heater services page.