C.J Demars Mechanical, Heating & Air Conditioning

C.J Demars Mechanical, Heating & Air Conditioning C.J Demars Mechanical is a commercial & residential heating and air conditioning service and install Boilers, Furnaces, Air Conditioners, Hot water heaters. Mr.

Overview

C.J Demars Mechanical is a full service Heating, Air Conditioning & Hot water service provider. We offer 24 hour emergency service at a fraction of the cost. We have what you need to live this winter in comfort. C.J Demars Mechanical is locally owned and operated by the Demars family in Fulton, NY. Started with a Faith Based conviction to provide quality Heating and Air Conditioning sys

tems at prices Home owners can afford. Demars had an idea. Why not take every good practice from his past employers and incorporated it into one company. The product. C.J Demars Mechanical. Taking the Higher standards of Commercial heating and air conditioning and bringing it into American homes. Professional systems at fair prices. If your going to pay to have it done. Why not choose Demars for your next Heating Solution. Whether it’s a furnace or boiler. Air conditioner or Service call. You can count on us to bring quality back to the HVAC market. Proudly serving: All of Oswego County, including Oswego, NY, Fulton, NY, and Syracuse, NY.

In floor heat? No problem!
03/19/2026

In floor heat? No problem!

The Rinnai Combi Boiler. Simply Reliable. Call today to schedule your free in home consultation.
02/13/2026

The Rinnai Combi Boiler. Simply Reliable. Call today to schedule your free in home consultation.

A recent install of ours. It came in box’s. When we left it was making steam.
01/30/2026

A recent install of ours. It came in box’s. When we left it was making steam.

Quality work on a portfolio caliber project. This is just one of the fine projects we’ve had the privilege to complete. ...
09/10/2025

Quality work on a portfolio caliber project. This is just one of the fine projects we’ve had the privilege to complete. Can You guess what it will be?

Fun little project on a monster of a house.
11/20/2023

Fun little project on a monster of a house.

03/11/2022

Assist in managing company bookwork and finances. Office organization and account management. Must have a base knowledge of quick books.

10/13/2021

Its heating season again! Is your system ready for the winter? Call today to schedule your annual furnace or boiler Pre season maintenance check up. Don't wait until the first cold snap to find out somethings wrong. Proudly servicing Fulton, Oswego and surrounding area's.

06/03/2021

It is official. The heat is on! Don’t let another year go by with out Central Air. Call us and get on our schedule for your new American Standard central ac system.

04/27/2020

Join our team of Commercial Sheetmetal ductwork installers and pipe fitters. We currently have several full time positions ready to be filled. Work close to home with no travel. Pay based on experience.

Address

22 East Cayuga Street
Oswego, NY
13126

Opening Hours

Monday 7am - 5pm
Tuesday 7am - 5pm
Wednesday 7am - 5pm
Thursday 7am - 5pm
Friday 7am - 6pm

Telephone

+13155321668

Website

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