Directory / Somerville / HVAC
SumZero Energy Systems
12 permits across 1 town in the last 12 months
HVAC · Electrical · Gas fitting
- Websitesumzeroenergysystems.com
- Business locationHolliston, MA
Business contact from Company website, checked Nov 4, 2026. Not from permit records.
Activity by month
Permits filed each month. The first and last months are partial.
Where they’re working
Permits filed under this contractor by state and town, last 12 months.
Massachusetts 12
Types of projects
By place, trade and period
| Town / city | State | Trade | Last 90 days | Last 12 months | All documented |
|---|---|---|---|---|---|
| Somerville | MA | HVAC | 4 | 8 | 8 |
| Somerville | MA | Electrical | 1 | 3 | 3 |
| Somerville | MA | Gas fitting | 1 | 1 | 1 |
Permit timeline
- Sep 29, 2026Residential Other: Installation of a brand new Custom Comfort 36,000 BTU Xtreme Heat Pump Unit. Installation of a CustomSomerville · HVAC · Residential · Issued · #B26-001627
- Sep 29, 2026Residential Other: New Exhaust vent - New carbon monoxide detector - Reuse Intake vent - Reuse Gas Pipe - Reuse existinSomerville · HVAC · Residential · Under Review · #B26-001630
- Aug 28, 2026Residential: Installation of a brand new Custom Comfort 36,000 BTU Xtreme Heat Pump Unit. Installation of a Custom ComfoSomerville · HVAC · Sheet metal · Withdrawn · #SM26-000187
- Aug 28, 2026Residential: Installation of a new high voltage electrical for (1) system. Includes: - New disconnect with surge proteSomerville · Electrical · Electrical · Under Review · #E26-001295
- Aug 27, 2026Residential: DENIED, NEED BUILDING PERMIT. -JE 9/29/26 New Exhaust vent - New carbon monoxide detector - Reuse Intake Somerville · HVAC · Sheet metal · Denied · #SM26-000186
- Aug 27, 2026Residential - Existing: Installation of a Trane 96% AFUE single-stage Gas Furnace designed to deliver reliable heating wSomerville · Gas fitting · Gas · Issued · #G26-000395
- Mar 17, 2026Residential Alteration: - Installation of six-zone, two-condenser Ductless heat pump system to serve the home. NOTE: worSomerville · HVAC · Residential · Issued · #B26-000385
- Feb 16, 2026Residential: DENIED DUCTLESS SYSTEM NEEDS BP - JS 3/17/26- Installation of six-zone, two-condenser heat pump system to sSomerville · HVAC · Sheet metal · Denied · #SM26-000030
- Jan 14, 2026Residential: Installation of 2 air handler/heat pump systems to serve the homeSomerville · HVAC · Sheet metal · Issued · #SM26-000009
- Jan 14, 2026Residential: - Wiring of 2 heat pump condensers - GFCI outlets - New subpanelSomerville · Electrical · Electrical · Issued · #E26-000060
- Dec 12, 2025Residential Other: Installation of (4) zone ductless with (2) heat pump systems to serve the homeSomerville · HVAC · Residential · Under Review · #B25-002244
- Dec 4, 2025Residential: - Wiring of 1 heat pump condensers - GFCI outletSomerville · Electrical · Electrical · Under Review · #E25-001860
Permit counts reflect permits filed in public town records naming this contractor as applicant. A permit shows permitted activity, not necessarily completed work, quality of work, or a final inspection.
License
We haven’t verified a state license for this name yet. We only show license details when we can match the record to this contractor with confidence. You can check directly at the Massachusetts license lookup.
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Sources
- Somerville Open Data: Applications for Permits and Licenses · retrieved Nov 4, 2026
Not verified: contact info, business address, insurance, reviews. Page built Nov 5, 2026.