Tankless Water Heater Installation & Replacement in Dallas
Double M Plumbing handles tankless water heater installation and hot water heater replacement for Dallas homeowners. We're certified installers for Rinnai, Navien, and Rheem tankless systems – and we can handle the full job in a single day. 37+ years. 15,000+ jobs. Licensed & insured.
Our Services
Professional plumbing solutions delivered by licensed experts
Gas Tankless Installation
Professional gas tankless water heater installation.
- Natural gas systems
- Propane conversions
- Venting installation
- Gas line upgrades
Electric Tankless Installation
Electric tankless water heater installation.
- Whole-house systems
- Point-of-use units
- Electrical upgrades
- Panel modifications
System Design
Custom sizing and configuration for your needs.
- Load calculations
- Proper sizing
- Multi-unit systems
- Recirculation options
Certified Installers for Rinnai, Navien & Rheem Tankless Systems
When you're searching for a Rinnai tankless water heater installation, a Navien tankless installation, or a Rheem tankless install in Dallas – Double M Plumbing is your certified local expert. We work directly with all three major brands and are trained to handle their specific requirements for gas line sizing, venting, and commissioning.
Rinnai
Known for reliability and strong flow rates. We install the full Rinnai lineup including the RU and RUR series, with proper condensate and recirculation setup.
Navien
Industry-leading condensing technology. Our installers are experienced with Navien's NPE series and CombiBoiler systems, including their specific venting and water quality requirements.
Rheem
A top choice for value and warranty coverage. We handle Rheem RTGH and Performance Platinum series installations, including gas line upgrades if needed.
Not sure which brand is right for your home? Call us at 214-714-6600 for a free consultation and honest recommendation.
Why Choose Double M Plumbing
37+ years of trusted service in the Dallas-Fort Worth area
One-Day Installation
Most installations completed in one day with minimal disruption.
Expert Installation
Certified installers trained by major manufacturers.
Energy Savings
Save up to 30% on water heating costs with tankless technology.
Licensed & Insured
Fully licensed, bonded, and insured for your protection.
Manufacturer Warranty
Full manufacturer warranty plus our installation guarantee.
Free Consultation
Free in-home assessment and detailed estimate.
37+ Years of Trusted Plumbing in DFW
Double M Plumbing is a local, family-owned company serving Dallas-Fort Worth homeowners for over 37 years.
Our licensed and insured plumbers have completed 15,000+ jobs — with same-day service, flat-rate pricing, and no hidden fees.
Frequently Asked Questions
Get answers to common questions about our services
Serving Select Dallas Neighborhoods
Trusted plumbing service in Dallas's most established communities
Ready to Get Started?
Contact us today for fast, reliable plumbing service with same-day availability.