Cabrillo Project · East Burlingame, Burlingame · Tankless Water Heater Installation
Tank-to-tankless water heater conversion in a Burlingame ranch
1958 single-story ranch, 4 bedrooms / 3 bath, ~2,200 sq ft
Draft — awaiting Cabrillo photography & customer consent
The customer's problem
Family of five running out of hot water after two showers. 20-year-old 50-gallon gas tank in the garage was oversized for the space and rusting at the base pan. Wanted endless hot water without the electrical panel upgrade an equivalent heat-pump water heater would have required.
The Cabrillo solution
Removed the 50-gallon tank, capped the gas line at the wall, installed a Navien NPE-240A2 condensing tankless water heater at the same wall location. Ran 3" PVC concentric intake/exhaust through the existing flue rough-out (no roof penetration). Recirculating loop kept hot water at kitchen sink within 4 seconds.
Equipment installed
| Brand | Model | Role |
|---|---|---|
| Navien | NPE-240A2 condensing tankless (199,900 BTU/hr, 0.96 UEF) | Water heater |
| Grundfos | UP15-10 SU7P/TLC recirculating pump | Hot water recirc |
| Navien | NaviLink Wi-Fi controller | App control + diagnostics |
What the homeowner got
- Endless hot water for the family + two guest bathrooms
- Reclaimed ~9 sq ft of garage floor space
- 0.96 UEF (vs. 0.62 UEF on the retired tank) — ~35% gas savings on water heating
- 15-year Navien heat-exchanger warranty
- Duration
- 1.5 days (crew of 2; ½ day removal + gas re-work, 1 day tankless install + vent run + startup)
- Financing
- GreenSky 0% APR for 24 months
- Service
- Tankless Water Heater Installation
- Location
- East Burlingame, Burlingame