HVAC
Central — Bosch
| Air handler | Bosch BVA-24WN1-M18 |
| Air handler serial | 399A-038-00119-7739832071 |
| Condenser | Bosch BOVB-36HDN1-M18M |
| Condenser serial | 399A-140-000189-8733955036 |
| Location | Air handler: anteroom upstairs · condenser: left side |
| Refrigerant | R410A |
| Last service | Sep 3 2025 · James River Air · invoice S412382 |
Mini split — Studio (single zone)
| Indoor head | Mitsubishi MSZ-GL15NA · serial 08E39194 |
| Outdoor unit | Mitsubishi MUZ-GL15NA · serial 0XC08237 |
| Capacity | 15,000 BTU · R410A |
| Filter | Clean every few months |
Mini split — Upstairs (multi-zone)
| Bedroom head | Mitsubishi MSZ-GL12NA · serial 63E14285 |
| Anteroom head | Mitsubishi MSZ-GL09NA · serial 64E24516 |
| Outdoor unit | Mitsubishi MXZ-2B20NA · serial 5003763 T |
| Capacity | 20,000 BTU multi-zone · R410A |
| Filter | Clean every few months |
Boiler — Weil-McLain CGM-4-PI
| Series / serial | Series 7 · serial 672900 |
| Fuel | Natural gas |
| Capacity | 105,000 BTU input · 83,000 BTU DOE output |
| Age | Original — est. 1970s–80s cast iron |
| Location | Basement |
| Service | James River Air · annual fall check |
Water
Water heater — State ProLine
| Model | State ProLine 50 gallon |
| Serial | 2548146175646 |
| Fuel | Natural gas |
| Installed | February 2026 · Carroll's Plumbing |
Water softener — Water Right
| Model | Water Right Impression Plus IMP-1054-00-00-00-00-VT-00-00-XX |
| Control valve | V1XPDME-88WR · serial VLV11095908 |
| Bypass valve | V3001-04 · serial BND11343261 |
| Capacity | 42,000 grains · installed Feb 2026 |
| Filter | 14-GCB2-10 carbon · change every 4–6 months |
Reverse osmosis — Atlas Filtri
| Model | Atlas Filtri Oasisdpro |
| Location | Under kitchen sink |
| Installed | February 2026 · Carroll's Plumbing |
| Filters | 5 total · sediment every 3–6 months |
Other systems
Fireplace, solar, crawlspace
| Fireplace | Mendota gas · living room · model TBD (check plate in firebox) |
| Chimney | Masonry · 18 ft · flue tile liner · 8×13 flue · last service Jun 2018 ⚠️ |
| Solar | SolarEdge inverter · Convert Solar · Aug 2022 |
| Crawlspace | JES CleanSpace + drainage · Sep 2015 · 25yr warranty to Sep 2040 |
| Sump pump | Zoeller · basement |