2 photosRadiant systems
Radiant Heating Installation
Radiant tubing laid out and tied off over insulation ahead of the pour, with the manifold and controls set on the mechanical side.
Heating · Cooling · Ventilation
Warm in January. Cool in July. Every year since 1990.
When the heat quits or the AC gives out, you want someone who picks up the phone and knows what they're looking at. We've kept Greater Boston homes comfortable for more than three decades — so you stay warm in January and cool in July without the stress.
BBB Accredited, A+
Trusted in Medford, Malden & Boston since 1990
Talk to a real person · Residential & commercial · Free consultations on new systems
Boiler installationA finished Navien with the piping and controls laid out properly
60+ years combined
Two owners, both in the trade for decades
BBB Accredited, A+
Licensed & insured · MA HIC #161190
Residential & commercial
Homes first, businesses welcome
Medford, Malden & Greater Boston
Serving the area since 1990, not a call center
You'll be dealing with Frankie and Hans — the two licensed owners who still do the work themselves. Frankie grew up in Medford, Hans lives in Malden. Between them: 60+ years fixing systems around here.
Meet the owners →
What we do
Complete HVAC service, from the boiler room to the rooftop.
Choose a service to see what Priority One handles, common problems we solve, and how we approach the work.
Not sure what you need?
Tell us what your system is doing and we'll help point you toward the right service.
Find the Right ServicePrefer to talk? Call (508) 982-7953
Heating
No heat, uneven heat, or a furnace that short-cycles and never catches up. We service and install gas and oil heat, forced hot air and hot water — and we'll tell you straight when a repair beats a replacement.
- No-heat diagnosis and repair
- Furnace & boiler installation
- Thermostat and control problems
- Zoning and uneven rooms
Cooling
Central air that won't keep up, a condenser that hums but doesn't cool, or an older house with no ductwork. We repair and install central air and ductless mini-splits — sized for your house, not guessed at.
- AC repair and refrigerant service
- Central air installation
- Ductless mini-split systems
- Seasonal AC tune-ups
Ventilation
Proper airflow affects comfort, efficiency, moisture control and indoor air quality. Priority One handles ductwork, exhaust systems, airflow problems and custom ventilation work for residential and commercial properties.
- Custom sheet metal ductwork
- Duct repairs and rebalancing
- Bath and kitchen exhaust
- Commercial ventilation
Boilers & Oil Heat
Boilers are Hans's specialty — noisy, leaking, won't-fire-on-the-coldest-night included. We service oil and gas boilers, handle tank work, and keep older Greater Boston systems running years longer than people expect.
- Oil boiler cleaning & service
- Boiler repair and replacement
- Oil tank installation & removal
- Hot water and zone controls
Locally owned Licensed & insured Residential & commercial Serving Greater Boston
Also handled in-house
Not sure what’s wrong?
Tell us what it’s doing. We’ll tell you what it usually means.
Answer three quick questions and get a plain-English idea of what may be going on, plus the best next step.
- About 30 seconds
- No email required
- Clear next steps
Quick System Checker
Which system is giving you trouble?
What’s it doing?
How long has it been going on?
Our work
Real Work. Real Homes.
Every photo here is a Priority One job — our own installations, our own sheet metal, our own mechanical rooms around Greater Boston.
2 photos
2 photosBoilers
Boiler Installation
A wall-hung Navien with the near-boiler piping, circulators, air separator and controls laid out so the next service call is straightforward.
2 photosVentilation
Ventilation & Ductwork
Insulated trunk and branch ductwork run through the floor joists, fabricated and installed in-house by the licensed owners.
See the full project gallery
Heating · Cooling · Boilers · Ventilation · Radiant systems
How a call goes
From the phone call to a warm house — here's the whole thing.
No mystery, no runaround. This is what happens after you get in touch, every time.
Step 01
You reach a person
Frankie or Hans picks up — not a call center. You describe what's happening and we tell you honestly how soon we can be there.
Step 02
We show up when we said
You get a real arrival window and a call if anything shifts. Drop cloths go down before the toolbox does.
Step 03
A proper diagnosis
We test the system instead of guessing at it — the licensed owner doing the work is the one figuring out what's wrong.
Step 04
Your options, in plain English
What's wrong, what it takes to fix it, and whether repairing or replacing makes more sense for your house. You decide, not us.
Step 05
Done right, cleaned up
The work gets finished properly, the basement gets left tidy, and we walk you through what we did before we go.
Why homeowners call us back
Two licensed owners. No handoffs, no guessing.
We're not the biggest heating and cooling company around Boston. What we are is the one where the people who answer the phone are the same people who show up, diagnose the problem and stand behind the work.
01
Decades of hands-on experience
Frankie and Hans have more than 60 years between them on residential and commercial systems. Old boilers, odd retrofits, houses that were never built for ductwork — they've seen it before.
02
You get an owner, not a script
Call and you reach Frankie or Hans directly. They diagnose the system themselves, explain what they found in plain language, and don't hand you off to a salesperson.
03
We treat your house like a house
Drop cloths down, boots wiped, work area cleaned up before we leave. It's your home, not a job site — and the basement should look better when we go than when we came.
04
Done right the first time
That's how they were taught and it's how they still work. Take the time to find the real cause, size and install it properly, and you're not calling us back in six months for the same thing.
05
Licensed, insured, and current
Massachusetts general contractor, sheet metal and oil burner licenses, OSHA certification, Universal Freon Recovery, and ongoing training as equipment and codes change.
06
From here, working here
Medford and Malden are home. The people we work for are neighbors, and reputation around here travels fast — which is exactly the incentive you want in a contractor.
Our story
A Medford company, serving Greater Boston since 1990.
Priority One Services started the way most good trade businesses do: two people who knew heating and cooling inside out and got tired of watching work get done halfway. Frankie was born and raised in Medford and has been in the field since 1990. Hans lives in Malden and has spent more than 25 years on boilers, furnaces, central air and controls.
They're equal partners, they hold the same licenses, and they still run the calls themselves. The philosophy hasn't changed since day one — take the time to do it right the first time, respect the customer's home, and leave a system the next person can actually service.
Today that work runs from Medford and Malden through Boston and out to the suburbs — single-family homes, condos, small commercial buildings and the property managers who look after them.
Talk to us about your system
On the job
The people you call are the people who show up.
Most of the work happens in basements, crawl spaces and mechanical rooms — rough conditions, tight spaces, old houses that never made anything easy. That's where the experience shows.
Frankie and Hans are on the job with the crew, not running it from an office. When you talk to someone about your system, you're talking to the person who will be standing in front of it.
Meet the owners
Frankie and Hans.
Frankie Tringali
Co-owner · Medford, MA
Born and raised in Medford, Frankie has been in the field since 1990, working on everything from single-family heating systems to commercial jobs across Greater Boston. He's usually the voice on the other end when you call.
Licensed general contractorSheet metal licenseOil burner licenseOSHA certifiedUniversal Freon Recovery
Hans Martin
Co-owner · Malden, MA
Hans lives in Malden and has over 25 years in the trade. He's the one you want on a stubborn boiler — diagnosing furnaces, central air and control systems that have had three other people look at them already.
Licensed general contractorSheet metal licenseOil burner licenseOSHA certifiedUniversal Freon Recovery
Priority One Services, Inc. is registered with the Commonwealth of Massachusetts Board of Building Regulations and Standards · MA HIC #161190 · BBB Accredited with an A+ rating.
Seasonal maintenance
The cheapest repair is the one you never need.
Most no-heat calls we run in January were preventable in October. A seasonal tune-up catches the worn part, the drifting control and the clogged drain before they turn into an emergency on the coldest night of the year.
- Fall heating check before the first cold snap
- Spring AC check before the first heat wave
- Oil boiler cleaning and efficiency testing
- Priority scheduling for maintenance customers
Reviews
What Greater Boston homeowners say.
★★★★★
"Frank was on time, courteous and professional. He explained everything he was doing and cleaned up after himself. I would recommend Priority One to anyone."
KM
Karen M.Burlington, MA
★★★★★
"Our heat went out on a Sunday. They called me right back and had us running the same day. That kind of response is why we don't call anyone else."
LC
Larry C.Lynn, MA
★★★★★
"Hans figured out a boiler problem two other companies missed. Fair price, no runaround, and he took the time to show me what was wrong."
PS
Peter S.Medford, MA
★★★★★
"They installed central air in an old house everyone told us was impossible to duct. Neat work, on schedule, and the house is finally comfortable upstairs."
WJ
Walter J.Jamaica Plain, MA
★★★★★
"Honest people. They could have sold me a new system and instead they fixed what I had and told me how long it should last."
AK
Alex K.Malden, MA
★★★★★
"Professional from the first phone call to the final walkthrough. We've since had them back for maintenance on both units."
BM
Bill M.Wellesley, MA
★★★★★
"Prompt, tidy and reasonably priced. They treated my home with respect, which I don't take for granted with contractors."
DA
Dorina A.Medford, MA
★★★★★
"Great experience start to finish. They answered every question without making me feel like I was wasting their time."
LK
Lisa K.Boston, MA
Service area
Working in your neighborhood, most weeks.
Based on High Street in Medford and out across Greater Boston every day — from the North Shore suburbs to Boston proper and the towns west.
Tap a town to move the map — and see what a neighbor there had to say.
Commercial & property services
Homes are most of our work. Buildings are part of it too.
Property managers, landlords and small business owners around Greater Boston use us for rooftop units, commercial ventilation, boiler rooms, seasonal maintenance and the general property work that keeps a building running.
Same two owners, same licenses, same standard — just with the scheduling and documentation a building needs.
Common questions
Things homeowners ask us most.
My heat just went out — how fast can you get here?
Call us. No-heat and no-cool calls go to the front of the schedule, and in most cases we're out same day or next day depending on where you are and when you call. If it's an emergency, the phone is faster than the form: (508) 982-7953.
Should I repair my system or replace it?
It depends on age, the specific failure and what the rest of the system looks like. As a rule, if the unit is past 15 years, the repair is a major component, and it's been giving trouble every season, replacement usually wins. If it's a solid system with one bad part, we fix it. We'll give you the honest version either way — and a free consultation if you're weighing a replacement.
Do you charge for estimates?
Consultations and estimates on new systems and larger projects are free. For a service call on an existing problem, there's a diagnostic visit — we'll tell you what that is up front when you call, so nothing on the invoice is a surprise.
Who actually shows up at my house?
Frankie or Hans — the owners. Both are licensed Massachusetts contractors with sheet metal and oil burner licenses, OSHA certification and Universal Freon Recovery certificates. You're not getting a dispatcher's best guess of who's available.
Do you work on oil systems and oil tanks?
Yes. Oil boiler service and cleaning, oil burner repairs, and oil tank installation and removal are all in-house. A lot of Greater Boston housing stock still runs on oil and we've been servicing it since the beginning.
How often should heating and cooling equipment be serviced?
Once a year per system — heating checked in the fall, cooling in the spring. Oil equipment should be cleaned annually. It's the single cheapest thing you can do to avoid an emergency call and to get the full life out of the equipment.
Request service
Tell us what's going on.
Send the details and we'll call you back to confirm a time that works. Need someone now? Calling is always faster.
Call (508) 982-7953(508) 982-7953
Main line — heating, cooling & service calls
(781) 628-7887
Second line
Email us anytime
47 High Street #22
Medford, MA 02155 · Fax (781) 393-7569
Licensed & insured
MA HIC #161190 · BBB Accredited A+ · Major credit cards accepted
Your request has been received.
Thanks — we've got your details. Priority One will contact you shortly to confirm your appointment day and time. Nothing is scheduled until we've spoken with you.
- 1Request received ✓
- 2Frankie or Hans reviews it and calls you back
- 3You agree on a day and time that works
- 4We show up and get your system sorted
Need someone sooner, or is this an emergency? Please call us directly.
"We grew up around here, and most of our work still comes from people who were told about us by a neighbor. That's not something we take lightly. When you call Priority One, you get the two of us — and we'll take care of your home the way we'd want somebody to take care of ours."
Frankie Tringali & Hans MartinOwners, Priority One Services, Inc. · Medford, MA
When your home needs heating or cooling help, call Priority One.
Serving Medford, Malden, Boston and the surrounding communities since 1990.
Licensed & insured · MA HIC #161190 · BBB Accredited A+ · Free consultations on new systems