The 6 Models Compared
All 6 qualify for Mass Save $100 instant rebate (applied at point of sale through participating retailers). The differences matter for heat pump installations specifically.
| # | Model | Heat pump native | Sensors included | Price (before rebate) |
|---|---|---|---|---|
| 1 | Mysa for Heat Pumps | Yes — designed for cold-climate ASHP | Wall unit only (add-on remote $40) | $199 |
| 2 | ecobee Premium | Yes (full heat pump staging) | 2 remote sensors included | $249 |
| 3 | Google Nest Learning (4th gen) | Yes (heat pump support since 2023) | Sold separately | $279 |
| 4 | Honeywell Home T10 Pro | Yes (with extra setup) | 1 sensor included | $229 |
| 5 | Sensi Touch Wi-Fi (Emerson) | Limited (single-stage HP) | None | $169 |
| 6 | Bosch BCC100 | Yes (Bosch IDS native) | None | $189 |
Net cost after $100 Mass Save rebate: $69-$179.
Top 3 In Detail
If you're installing or already have a cold-climate heat pump, the top 3 below extract noticeably more performance than the bottom 3:
#1 Mysa for Heat Pumps
Built specifically for cold-climate air-source heat pumps (Mitsubishi, Fujitsu, LG ductless heads). Native IR control for ductless mini-splits + line-voltage compatibility for European-style heat pump installations. Best feature: balance-point auto-detection that minimizes defrost-cycle inefficiency. Best for: ductless multi-zone installs where each head needs independent smart control.
#2 ecobee Premium
Whole-home thermostat with included remote sensors for zone-aware temperature averaging. Heat pump staging native (compressor stage 1, stage 2, aux heat). Best feature: Smart Recovery learns the heat pump's slower morning warm-up vs gas furnace and starts earlier. Built-in Alexa speaker. Best for: ducted whole-home heat pump conversions in 2,000+ sq ft homes.
#3 Google Nest Learning (4th gen)
Auto-learning schedule + Home/Away assist. Heat pump support was inconsistent through 2022; the 4th gen (released 2024) fully supports heat pump staging. Best feature: Energy History dashboard with monthly usage breakdown. Sensor purchases extra. Best for: homes already in Google ecosystem (Nest cameras, Google Home).
Models #4-6: Specific Use Cases
The bottom 3 still qualify for the Mass Save rebate and work in many MA homes — but lose to top 3 on heat pump optimization. Each wins on a specific scenario:
- #4 Honeywell Home T10 Pro
- Best for retrofits of legacy multi-stage HVAC systems. Compatible with virtually any wiring configuration. Sensor included. Best for: homes still on gas furnace + AC who want to capture rebate now and add heat pump later.
- #5 Sensi Touch Wi-Fi (Emerson)
- Single-stage heat pump support only. Best for: simple single-zone applications (small condos, ADUs) where multi-stage isn't relevant. Cheapest entry into Mass Save rebate.
- #6 Bosch BCC100
- Native integration with Bosch IDS heat pump systems. Best for: homes installing Bosch IDS 2.0 Premium (#3 on our cold-climate heat pump list) where matched manufacturer reduces commissioning headaches.
How to Claim the Mass Save $100 Rebate
The $100 rebate applies through 3 paths:
- Instant rebate at participating retailer. Home Depot, Lowe's, Best Buy, and the Mass Save online store apply the rebate at checkout. Just show MA ZIP code. Easiest path.
- Post-purchase rebate filing. Buy from any retailer, submit receipt and serial number at masssave.com/rebates. Check arrives in 6-8 weeks. Use this when buying from non-participating retailer (Amazon, etc.).
- Bundled with HVAC installation. Mass Save HPC contractor includes thermostat in heat pump install — rebate files alongside heat pump rebate. No separate paperwork.
Frequently Asked Questions
Will any smart thermostat work with my cold-climate heat pump?
How much is the Mass Save smart thermostat rebate in 2026?
Is the Nest Learning Thermostat compatible with heat pumps?
Do I need a smart thermostat for Mass Save heat pump rebate eligibility?
What's the best smart thermostat for a Mitsubishi or Fujitsu ductless mini-split?
Will Mass Save apply the rebate retroactively if I already bought a thermostat?
Do I need multiple thermostats for a multi-zone heat pump install?
Can I install the thermostat myself or do I need a contractor?
References & Sources
- Mass Save Smart Thermostat Rebate. https://www.masssave.com/saving/residential-rebates/smart-thermostats
- ENERGY STAR Certified Smart Thermostats. https://www.energystar.gov/products/smart_thermostats
- ecobee Premium Specifications. https://www.ecobee.com/en-us/smart-thermostats/smart-wifi-thermostat-with-voice-control/
- Mysa Smart Thermostats. https://getmysa.com/
