For any inquiries, questions or service,
please call: 301-223-4040 or fill out the following form
For Emergency Service Do Not Use Form Call: 301-223-4040
15504 Falling Waters Rd
Williamsport, MD 21795
Hours of Operation
Phone Support 6 Days a week from 7am - 7pm
Monday - Friday 2:30pm - 11:00pm
Saturday - 7:00am - 5:00pm
Sunday - Emergencies Only
For Service Call: 301-223-4040
Commercial Service & Install
With our later operating hours we are here for you when you need us. We currently service several Restaurants, Churches, Stores and Day Care centers. We can also get your Commercial Operation set up on a maintenance plan to help prevent those costly breakdowns.
Residential Service & Replacement
With over 30 years experience we can certainly take care of all your Heating & Cooling service needs. If your system needs to be replaced we can assist you with selecting a system that meets your needs. Please give us call today to schedule your service appointment.
Thermostats, Controls and WiFi Accessories
We can help you install a new WiFi thermostat that you provide or we can go over the different options with you and provide you with one that we will professionally install. We also install Humidifiers and Media filters. So call us today to get your new Smart Home Controls installed.
If you need a Technician right now, know that Absolute Zero does not charge overtime and extra fees for many “after hours” calls. Our regular hours are:
Monday through Friday 2:30 p.m. until 11:00 p.m.
We also will not charge extra for calls on Saturdays and *Sundays!
We are open for evening and weekend service calls, 6 days a week. Our company cares about you and wants to take care of your issue as quickly as possible.
Due to rising health care costs, the owner decided a few years ago to take a full time position in the industry so that he could still maintain affordable services for his clients on the evenings and weekends, while also providing good health care for his family. We love what we do and our customer’s love that they do not have to miss work for our service calls or experience interruptions and inconveniences during normal business hours.
* Emergency only to be determined by Absolute Zero
Years of Experience
Corrective Geothermal service work for a church that wasn't able to heat properly.