Tankless Water Heater Installation & Repair — Kansas City
Tired of running out of hot water? Old tank heater leaking? JF Denney is KC's #1 Authorized Rinnai PRO — factory-trained technicians, gas line work included, and a 15-year warranty that's only valid from an authorized dealer.
How We Can Help
Whether it's a new installation, a tank-to-tankless conversion, or an emergency repair — we've got you covered.
New Tankless Installation
Professional Rinnai installation including gas line sizing, venting, and optional recirculation lines. We handle everything — gas, water, venting, electrical — in one visit. Free estimates. We register your unit for full warranty coverage.
Tank-to-Tankless Conversion
Ready to ditch the old tank? We remove your existing water heater, upgrade gas lines if needed, and install a wall-mounted Rinnai tankless system. Save floor space and up to 40% on water heating energy costs.
Tankless Repair
Error codes, no hot water, fluctuating temperatures, low flow — our factory-trained Rinnai technicians diagnose and fix it. We stock common parts for same-day repairs whenever possible.
Maintenance & Descaling
KC's hard water demands annual descaling to keep your tankless running efficiently and your warranty active. Our maintenance agreements include annual flushing, inspection, and filter replacement. Sign up for a maintenance plan →
Make the Switch to Tankless
A tankless water heater pays for itself through energy savings, longer lifespan, and available tax credits.
The Real Cost of Going Tankless
Yes, a tankless water heater costs more upfront than a traditional tank. But when you factor in 40% lower energy bills, a 20+ year lifespan (vs 10-15 for tanks), and available tax credits — most homeowners break even within 3-5 years and save thousands over the life of the unit.
Plus: ENERGY STAR certified Rinnai tankless models may qualify for federal tax credits. Ask us about current eligibility during your free estimate.
Bills
Lifespan
Warranty
Fee w/ Repair
Savings estimates based on DOE data for ENERGY STAR certified tankless water heaters vs. standard 50-gallon tank heaters. Actual savings vary by household size, usage, and local utility rates.
Tankless Service Across the KC Metro
Two locations serving six counties. Same-day service available.
Leavenworth County
Wyandotte County
Johnson County
Platte County, MO
Jackson County, MO
Cass County, MO
What Our Tankless Customers Say
5.0 stars across 1,076+ verified Google reviews. Here's what KC homeowners say about our tankless installations.
"We eventually went with a tankless system and couldn't be more pleased. JFDenney are always responsive to our needs and work with your busy life to minimize time needed to take off work. This alone is a service rarely seen and is another reason we are loyal customers!"
"Kyle was very attentive to providing us with multiple options available when replacing our hot water heaters. Denay and Jared were great to work with — knowledgeable in the product and trained us in the use of the system."
"Jill and Jared provided the best customer service I've had in years. Jill helped me pick the best system with no pressure, while Jared was the expert installer — so organized, neat, and even replaced some leaky fittings in the existing lines."
Why Choose JF Denney for Tankless?
JF Denney has been the KC metro's trusted plumbing experts since 1952. As an Authorized Rinnai PRO listed on rinnai.us/find-pro, we combine Rinnai's industry-leading tankless technology with 70+ years of plumbing expertise that no other local installer can match.
We handle everything — gas line work, installation, warranty registration, and ongoing maintenance. One company from start to finish. And we won't sell you a new system if a repair will keep yours running for years.
Our Tankless Service Guarantee
Every tankless service call is backed by our commitment to quality, transparency, and your complete satisfaction.
Factory-trained Rinnai technicians. Licensed, insured, and background-checked. We respect your home — booties, drop cloths, and cleanup on every visit. Sign up for a tankless maintenance plan →
Request Your Free Tankless Estimate
Fill out the form below and a JF Denney tankless specialist will contact you within one business day with a personalized estimate — including installation cost, energy savings projection, and warranty details.
Prefer to schedule directly? Book online or call 913-682-2182
Ready for Endless Hot Water?
Free estimates from KC's Authorized Rinnai PRO. Same-day consultations. We handle gas line work, installation, registration, and maintenance — all under one roof.