heat pump – 101 Red Gate Lane

Bosch 4 ton Heat pump integrated with oil system using Nest third generation thermostat.
- BOVA 60HDN1M20G Condenser
- BMA 4249DNTF Evaporator
- AHRI# 203377017 16.5 SEER/11.8 EER/9.5 HSPF
- 10-year manufacturer’s warranty on parts (Dec. 11 2019 – Dec. 11 2029) [tech specs pdf]
MAINTENANCE: Annual maintenance by Surner with oil furnace / oil tank
COSTS: cost to us $4398.18 — approximately $500 electrical, $3900 heat pump, $3650 installation, $3750 Mass Save rebate
- work done by Surner & DiBenedetto, Dec. 2019
- rebate submitted to MassSave Dec 2019
- $8148.18 – $3750 Mass Save rebate = $4398.18
- DiBenedetto electrical: $587.30
- Surner: $7560.88
  - materials $3683.94 + tax $230.25 + labor $3646.69 = total $7560.88
  - $3780.44 deposit paid Nov. 21
  - original quote was for $7560.87 which included a new thermostat, but we already had a Nest Gen 3, so did not need new thermostat
- Mass Save rebate $3750
TIMELINE of INSTALLATION:
- Surner meeting Oct. 2019
- Quote – Steve Beauregard, Surner, Nov. 1, 2019
- DiBenedetto Dec 2019
- 2019/12/11 Wed – heat pump being installed by Surner … will need annual maintenance.
- Dec 2019 – Mass Save rebate submitted – https://www.masssave.com/en/saving/residential-rebates/electric-heating-and-cooling/ … $1000 per ton of cooling
- Dec. 2024 – March 2025: Pressure transducer needed replacement. Condenser off on H5 again. Ran unit with gauges on, high side 383psi, low side 96psi before compressor shuts off. Went through the check points and evap pressure was 130psi and the condensing pressure was 14psi. Talked with tech support and check the pressure transducer (CN16), red and black wire had 5v DC, and white and black wire had .557v DC, showing a PSI on chart of around 14. Bad pressure transducer, need to order. Waiting for ETA, Will have to recover charge, cut out and braze in new transducer, then evacuate and recharge system. 2025/03/12 part came in & was replaced by Surner.