SumZero Energy Systems
HVAC contractor in Holliston, MA 01746
About this company
SumZero Energy Systems is listed as an HVAC contractor at 84 October Hill Rd Ste 7 in Holliston, Massachusetts, in Middlesex County. Federal motor carrier records list 2 drivers and 1 trucks for the company. It is one of 2 HVAC companies in ZIP 01746.
Other HVAC companies nearby
Nicholson Plumbing, Heating & Air Conditioning71 Whitney St, Holliston
1.3 mi(508) 881-1500
Obie Comfort Solutions82 Herbert St, Framingham
2.9 mi(508) 233-3811
Landry Mechanical Inc.763 Waverly St Unit 32, Framingham
3.1 mi(617) 580-0807
Ideal Air HVAC2 Cedar St, Framingham
3.2 mi(508) 975-3825
Paul Flaherty Plumbing & Heating186 Fountain St, Framingham
3.2 mi(508) 653-1775
Housing market around ZIP 01746
Figures describe the local area, not this company.
Typical home value$736,000+1.8% past year · +69% in 10 years
12-month value outlook+1.1%
Days to sale agreement14Boston metro · 15 a year ago
New homes permitted, 20252,341Middlesex County
Listings with a price cut23.7%Boston metro
Sale price vs list101.3%Boston metro
New construction sales302Boston metro, Aug · +23% from last year
Source: Zillow (home values, rent, outlook and metro sales), data through Sep 2026. Permits: U.S. Census Bureau.
Typical home value, last 10 years
Source: Zillow Home Value Index, Sep 2026.
Local building angle: Middlesex County permitted 2,341 new homes in 2025, including 1,372 apartment units. 14% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.