Tankless Water Heater Installation & Replacement
California Contractor License #399170
- ●Serving homes since 1976
- ●Same-day service
- ●Licensed and insured
- ●Quality workmanship
Ready when you need us
Tankless Water Heater Installation & Replacement -- Mike Diamond Plumbing
A tankless water heater should be selected for the amount of hot water the household may use at one time, not just the number of people in the home. Flow rate and the required temperature rise affect capacity, while the installation must also support the unit’s energy, venting, drainage, water, and control requirements.
Replacement can be a like-for-like project or a chance to correct capacity and installation concerns. A conversion from a storage tank usually needs a broader review because the existing gas, electrical, venting, and plumbing connections may not match the tankless unit.
Our same day service promise
Our fully stocked trucks help us complete eligible, approved work during the same visit. Specialty parts, permits, or added work may require a follow-up.
100% Satisfaction Guarantee
If you are not satisfied with our completed work, we will return and redo work within the approved scope at no additional charge.
Signs it may be time to plan tankless installation or replacement
If you smell natural gas, leave the area and call SoCalGas at 1-800-427-2200 from a safe location. Do not operate switches or attempt to repair the leak.
The existing unit has repeated or major failures
Repair history, parts availability, heat-exchanger or cabinet condition, and the cost of correction help determine whether another repair is practical.
Hot-water demand has changed
Simultaneous showers, fixtures, and appliances can exceed the unit’s usable flow at the required temperature rise. Sizing should reflect the real peak demand.
You want to convert from a storage tank
The project may need changes to gas supply, electrical service, venting, condensate drainage, water piping, mounting, or recirculation. These conditions should be reviewed before equipment is selected.
What determines the tankless installation plan?
New tankless water heater installation
We install an eligible tankless system sized for the household hot-water demand.
Tankless water heater replacement
We remove a failed or aging tankless unit and install a compatible replacement.
Tank-to-tankless conversion
We plan eligible conversions from a storage tank after reviewing capacity, placement, connections, and household use.
System sizing and equipment selection
We compare flow rate, temperature rise, energy source, and simultaneous hot-water needs before recommending a unit.
Gas, venting, and electrical work
The approved project can include the connections and capacity changes required for the selected equipment.
Water, condensate, and recirculation connections
We complete the approved plumbing, drainage, mounting, and optional recirculation work included in the installation.
Install, replace, or repair the tankless water heater?
Install or replace
Fits a new tankless project, a non-serviceable unit, or equipment that no longer meets the household demand.
Repair
May be appropriate when testing identifies a serviceable component and the existing unit and installation remain usable.
Maintain
Planned care can address eligible filters or scale, but it does not restore a failed heat exchanger or correct an unsuitable installation.
What happens during tankless water heater installation & replacement?
Our plumber follows these steps when planning tankless installation or replacement:
- 1. Review household hot-water use, peak demand, and the existing equipment.
- 2. Confirm flow, temperature rise, utilities, venting, drainage, placement, and service access.
- 3. Explain suitable equipment and any connection or conversion work.
- 4. Provide upfront and transparent project pricing before authorization.
- 5. Install the approved unit, test operation, and review basic controls and maintenance needs.
Related service options
Tankless Water Heater Repair & MaintenanceError codes, temperature changes, reduced flow, or overdue care can prompt tankless repair or maintenance.
Water Heater Installation & ReplacementA storage-tank system may be the right choice depending on demand, space, utilities, and project goals.Water Heater RepairA serviceable storage-tank component may be repairable when the tank itself remains usable.Why choose Mike Diamond for tankless water heater installation & replacement?
We inspect the system, explain what we find, and provide pricing before authorized work begins.
Tankless Water Heater Installation & Replacement questions
What does tankless water heater installation & replacement include?
A tankless water heater should be selected for the amount of hot water the household may use at one time, not just the number of people in the home. Flow rate and the required temperature rise affect capacity, while the installation must also support the unit’s energy, venting, drainage, water, and control requirements. Replacement can be a like-for-like project or a chance to correct capacity and installation concerns. A conversion from a storage tank usually needs a broader review because the existing gas, electrical, venting, and plumbing connections may not match the tankless unit.
When should I request tankless water heater installation & replacement?
Repair history, parts availability, heat-exchanger or cabinet condition, and the cost of correction help determine whether another repair is practical.
What affects the cost of tankless water heater installation & replacement?
The price depends on equipment capacity, fuel or electrical requirements, venting, drainage, water piping, removal, access, mounting, recirculation, and required connection changes. We explain the recommended scope and price before authorized work begins.
How do you decide between this service and another option?
Install or replace: Fits a new tankless project, a non-serviceable unit, or equipment that no longer meets the household demand. Repair: May be appropriate when testing identifies a serviceable component and the existing unit and installation remain usable. Maintain: Planned care can address eligible filters or scale, but it does not restore a failed heat exchanger or correct an unsuitable installation.
What should I do if the situation appears unsafe?
If you smell natural gas, leave the area and call SoCalGas at 1-800-427-2200 from a safe location. Do not operate switches or attempt to repair the leak.
