What This Service Includes
Our comprehensive tankless water heater service covers new installations, repairs, annual maintenance, and conversions from tank-style units. We install and service all major brands of gas and electric tankless water heaters including Rinnai, Navien, Rheem, Takagi, and Noritz units.
Installation includes proper sizing for your home's hot water demands, electrical or gas line upgrades when needed, code-compliant venting for gas units, water line connections, and complete testing. Our technicians are factory-trained on tankless systems and understand the unique requirements of Houston's water conditions.
Signs You Need Tankless Service
- •No Hot Water: Unit fails to heat water or shuts off during use
- •Inconsistent Temperature: Water alternates between hot and cold
- •Error Codes: Display panel shows fault codes or error messages
- •Reduced Flow: Hot water pressure significantly lower than before
- •Strange Noises: Rumbling, rattling, or loud ignition sounds
- •Water Leaks: Leaking from unit connections or heat exchanger
- •High Energy Bills: Reduced efficiency increasing utility costs
Common Problems in Houston Homes
Hard Water Damage: Houston's hard water is particularly damaging to tankless units. Mineral deposits accumulate inside the heat exchanger, restricting water flow and reducing heating efficiency. Without annual descaling, these deposits cause premature failures and void manufacturer warranties. Hard water also clogs inlet filters and damages flow sensors.
Ignition Failures: Gas tankless units depend on precise ignition systems that can fail due to gas pressure issues, corroded ignition components, or sensor failures. Ignition problems leave you without hot water and require professional diagnosis to identify whether the issue is gas supply, electrical components, or internal unit failure.
Inadequate Sizing: Many tankless installations fail to meet expectations because units were undersized for the home's actual hot water demands. If multiple fixtures run simultaneously and the unit can't maintain temperature, you need either a larger unit or multiple units installed in series to handle peak demand.
Installation Considerations
Proper tankless installation requires careful planning. Gas tankless units need adequate gas supply - often requiring upsizing the gas line from the meter. They also need proper combustion air supply and Category III stainless steel venting. Electric tankless units can require 150-200 amp electrical service with multiple 40-60 amp circuits.
Location matters significantly. Outdoor installations work well in Houston's climate but need protection from direct weather exposure. Indoor installations require proper venting and adequate clearances. Distance from fixtures affects performance - placing units closer to major hot water demand points improves efficiency and response time.
We calculate your home's hot water demand by totaling the flow rates of fixtures you'll use simultaneously. Houston's incoming water temperature averages 65-70°F, requiring less temperature rise than cold climates. This allows smaller units to meet demand compared to northern installations, but proper sizing remains critical for satisfaction.
Maintenance Requirements
Annual maintenance is essential for tankless units in Houston. We perform complete descaling to remove mineral deposits, clean inlet filters, inspect gas burners or electric heating elements, test ignition systems, verify proper venting, check for leaks, and test safety controls. This maintenance prevents failures and maintains manufacturer warranties.
Descaling involves circulating descaling solution through the heat exchanger to dissolve accumulated minerals. This process typically takes 45-60 minutes and should be performed annually in Houston's hard water conditions. Skipping maintenance voids warranties and leads to expensive repairs or premature replacement.
Repair vs Replacement
Tankless units typically last 20+ years with proper maintenance. If your unit is under 10 years old and the repair cost is less than 40% of replacement cost, repair makes sense. Failed heat exchangers, control boards, and ignition systems can be replaced. If the unit is over 15 years old or requires multiple expensive repairs, replacement often provides better value.
Newer tankless models offer improved efficiency, quieter operation, and better temperature control. If your current unit can't meet your hot water demands or shows signs of multiple component failures, upgrading to a properly-sized new unit may be the best solution.
Emergency Situations
Complete loss of hot water from a tankless unit requires prompt service. While tankless failures are less likely to cause flooding than tank units, they leave you without hot water for essential needs. If your tankless unit displays error codes, won't ignite, or produces only cold water, call (713) 930-3461 for same-day service. Our technicians carry common parts and can often restore service the same day.
Related Services
Service Areas
We provide tankless water heater service throughout Houston Metro Area:
Frequently Asked Questions
How does a tankless water heater work?
Tankless water heaters heat water on demand as it flows through the unit. When you turn on hot water, cold water travels through a pipe into the unit where gas burners or electric elements rapidly heat the water to the desired temperature. This eliminates standby energy losses from keeping stored water hot.
What are the benefits of tankless water heaters?
Tankless units provide endless hot water since they heat on demand rather than depleting a storage tank. They're more energy efficient, reducing utility bills by 20-40%. They last 20+ years versus 10-15 for tank units. They take up minimal space and can be mounted on walls. Multiple units can supply very large homes.
What size tankless water heater do I need?
Sizing depends on flow rate (gallons per minute) and temperature rise needed. Calculate total GPM of fixtures you'll use simultaneously, then select a unit that can deliver that flow while raising incoming water temperature to 120°F. Houston's warm groundwater temperature makes smaller units viable compared to cold climates.
Can a tankless water heater replace my current tank unit?
Yes, but installation may require electrical or gas line upgrades to handle the higher demand. Gas tankless units need larger gas lines and proper venting. Electric units may require 200-amp electrical service and multiple dedicated circuits. We assess your home's systems to determine requirements and costs.
How do I maintain a tankless water heater?
Houston's hard water requires annual descaling to remove mineral buildup that reduces efficiency and can cause failures. We flush the heat exchanger with descaling solution and clean the inlet filter. Regular maintenance prevents expensive repairs and extends unit lifespan significantly.