M.S. Johnston has completed 31 commercial hvac projects in Frederick, MD, and our service trucks have run 1,388 calls to businesses in the area. We have worked out of the same Hagerstown address since 1932, which means in Frederick we are frequently servicing equipment we installed ourselves.
Commercial HVAC work we do in Frederick
- Rooftop unit replacement and retrofit
- Chiller and boiler service
- Air handler and VAV work
- Ductwork fabricated in our own sheet metal shop
- Building controls and thermostats
- Planned maintenance agreements
- Emergency repair when a unit goes down
- Design/build for new construction and additions
Commercial HVAC projects completed in Frederick
A sample of commercial hvac work on our books in and around Frederick:
The kind of Frederick buildings we work in
Our commercial hvac work in Frederick has been concentrated in auto dealerships, restaurants and bars and medical and senior care. That mix is specific to Frederick, and it shapes how we schedule: these are buildings that stay open while we work, so we stage the job around their hours.
We cover Frederick from Hagerstown along with Hagerstown, Williamsport, Boonsboro, so a technician is usually already in the area.
What Frederick businesses usually call us about
Utility bills that jumped without an obvious cause
Usually economizers stuck open, simultaneous heating and cooling, or a control schedule nobody has looked at since installation.
Heating that cannot keep up in a high-bay space
Warehouses and shops lose heat faster than the design allowed for, usually through the envelope rather than the equipment. Destratification and unit heaters often beat buying more tonnage.
Rooftop equipment nobody can safely reach
If access is bad, maintenance quietly stops happening. We will tell you what needs a platform or a rail before somebody gets hurt.
A rooftop unit that keeps tripping
Usually a failing compressor, a dirty coil, or a control board that has been limping for a season. We diagnose before we quote, because replacing a unit that needed a $400 repair is how contractors lose customers.
A building that was added onto without redoing the system
Very common. The original equipment was sized for the original footprint, and the addition got tied into whatever was closest. We resize and rebalance rather than patch.
Equipment past its service life
We will tell you when repair stops making financial sense and give you the numbers rather than a sales pitch.
How a Frederick job actually runs
You call 301-733-1066 and reach a person, not a queue. For a breakdown we get the details that decide urgency: what the equipment is, what it is protecting, and whether product or tenants are at risk right now. Emergency refrigeration and no-heat calls jump the routine schedule, because a walk-in full of inventory is a different problem from a thermostat that reads two degrees high.
For quoted work we come out and look before we price. We would rather spend an hour on a roof in Frederick than send a number based on a phone description and then revise it once the panel is open. When a repair stops making financial sense against replacement, we say so and show you the arithmetic, including what the old equipment is costing you in energy and downtime while it limps along.
Everything is documented against the building, so the next visit starts with a history instead of a guess. For customers we have served for years, that record goes back further than most of the equipment does.
Why it matters that we are local to Frederick
We are the longest-tenured York dealer in the world, and we fabricate our own ductwork and fittings in the sheet metal shop behind our Hagerstown office. That means a duct transition that would take days to source shows up the next morning.
One contractor covers the whole building. The rooftop equipment, the refrigeration, the kitchen line, and the ductwork tying them together all come from the same company. When something fails in Frederick you make one call instead of three, and there is no argument about whose equipment is at fault.
We also handle commercial refrigeration in Frederick.
Equipment, parts, and who stands behind them
We are the longest-tenured York dealer in the world, and we fabricate our own ductwork and fittings in the sheet metal shop behind our Hagerstown office. That means a duct transition that would take days to source shows up the next morning. When the company that sold the equipment is also the company that installed it and services it, a warranty claim is a phone call rather than an argument about who is responsible. That is worth more in year six than it seems in year one.
We keep the service history for Frederick buildings on file, which matters when a part number is obsolete or when the person who knew the system has retired. On older jobs we can often tell you what is in the building before we open a panel, because our own crews put it there.
Budgeting commercial hvac work in Frederick
Most owners are choosing between repairing what they have, replacing it now, or planning replacement for a future budget year. We give you the numbers for all three rather than the one that suits us, including what the current equipment costs to run and what failure during peak season would cost in lost business.
For planned work we can phase a project across budget cycles, and for buildings with several systems reaching end of life at once we will tell you the order to do them in. Nobody replaces everything in one year, and the sequence matters more than most contractors admit.
Questions we get from Frederick
Do you work with building owners or only general contractors?
Both. Roughly a third of our work is new construction through GCs, and the rest is direct with owners and property managers.
Can you take over a maintenance contract from another contractor?
Yes. We will inspect what is there first and tell you honestly what condition it is in before we take responsibility for it.
Do you handle emergency HVAC repair in Frederick?
Yes. We run service out of Hagerstown and dispatch to Frederick regularly. Call 301-733-1066 and you will reach a person who can put a technician on it.
Do you carry the parts to fix commercial HVAC in Frederick the same day?
We stock common commercial parts and fabricate sheet metal in house, so the usual wait for a duct fitting or transition does not apply.
Can you handle design/build for a new building?
Yes. We have professional engineering licenses and take projects from concept through commissioning, with our own fabrication behind the schedule.