The first real cold snap usually reaches the Upper Valley in mid-January. Somewhere in a Lebanon office building, a tenant unlocks the door at seven in the morning, finds the suite sitting at 58 degrees, and writes an email that will resurface eighteen months later during a renewal negotiation.
That email is almost never about a broken part. It's about a decision someone made the previous August, or didn't make at all.
Tenants never see the roof. They don't read service reports or track filter schedules. They feel the air, and from that they decide whether the building is well run. Mechanical discipline is the cheapest tenant retention tool an owner has, and it's the one most often left on the table.
Here's how we handle it.
1. Start with an inventory that names every unit
You can't manage equipment you haven't counted. Before anything else, we build a full mechanical inventory: rooftop units, boilers, chillers, air handlers, VAV boxes, exhaust fans, mini-splits, pumps, controls, and any supplemental equipment a tenant installed and forgot to mention.
Each unit gets a record. Age, make and model, service history, current condition, warranty status, which vendor owns it, and which tenant spaces it serves.
That last field matters more than owners expect. When a 22-year-old rooftop unit fails, the question isn't just "what does it cost to replace." It's "whose lease is affected, and how long can they operate without it." A building with a clean inventory answers that in a minute. A building without one spends two days figuring it out while a tenant sits in the cold.
2. Remember that Upper Valley buildings run on delivered fuel
This is where New England HVAC diverges from most of the country, and it's the part national vendors consistently miss.
There's no natural gas distribution here. Vermont Gas Systems is the state's only natural gas utility, and its territory covers Addison, Chittenden, and Franklin counties, nowhere near Windsor or Orange. On the New Hampshire side, Liberty Utilities serves roughly 30 communities along the I-93 corridor plus Berlin and Keene, while Northern Utilities covers the seacoast and southeast. Hanover, Lebanon, Claremont, and Newport sit outside both.
So commercial buildings from Bradford down to Windsor heat with propane, fuel oil, electricity, wood, or some combination. That changes the management job in concrete ways:
- Tank capacity becomes a design constraint. A building that burns through its propane in nine days during a cold stretch needs a delivery schedule built around weather, not around a fixed calendar.
- Fuel pricing is volatile and unregulated. Propane and oil contracts deserve the same scrutiny as any other operating expense line.
- Runouts are an emergency, not an inconvenience. A restart after a runout can mean a licensed tech, a pressure test, and half a day of downtime.
- Cold-climate heat pumps change the math. They work well here now, but they need commissioning and backup logic that actually engages when the outdoor temperature drops.
We monitor tank levels, coordinate delivery ahead of forecast cold, and treat fuel supply as part of HVAC management rather than a separate accounting problem.
3. Write a PM scope specific enough to enforce
"Routine maintenance" is not a scope. It's a phrase vendors use to keep their obligations flexible.
A preventative maintenance contract should name the work: inspection frequency, filter change intervals and sizes, belt replacement standards, coil cleaning, economizer testing, combustion testing and efficiency targets, refrigerant checks, condensate and drain pan service, controls verification, and seasonal startup and shutdown procedures.
We review every HVAC service contract before it's signed and again at renewal. When a scope is vague, work quietly disappears from it, and nobody notices until a compressor fails in July. A specific scope also gives ownership something to hold a vendor to when performance slips.
4. Track complaints by zone, not by ticket
Most buildings log HVAC complaints as isolated tickets. Someone was cold, someone fixed it, ticket closed. That approach throws away the most useful diagnostic data a building produces.
We record which tenant reported the issue, the affected zone, time of day, outdoor conditions, whether it's recurring, and what corrective action was taken.
One complaint from a corner office in February means very little. Four complaints from the same northwest zone across two winters means the balancing is wrong, a damper is failing, the insulation is inadequate, or a unit is losing capacity. Patterns show up long before equipment does, and they're cheap to act on when you catch them early.
5. Plan for shoulder season in February, not April
Spring and fall are harder on New England buildings than January. A day in April can start at 28 degrees and hit 68 by mid-afternoon. Older buildings in Woodstock, Windsor, and White River Junction often can't switch modes quickly, and some require manual changeover.
Tenants read that as neglect. They don't know the boiler and the chiller can't run simultaneously.
We prepare for the transition before it arrives: reviewing changeover timing, confirming control schedules, watching extended forecasts, prepping vendors, and telling tenants in advance where the building's limits actually are. Good communication doesn't fix a two-pipe system. It does stop a mechanical limitation from being experienced as a management failure.
6. Check the controls before you approve capital
A surprising share of comfort complaints have nothing to do with equipment condition. The equipment is fine. It's being told to do the wrong thing.
We look for incorrect schedules, overridden thermostats, failed or drifting sensors, simultaneous heating and cooling, poor setback configuration, zones fighting each other, and controls that were never recalibrated after the last upgrade.
Before we recommend a replacement, we confirm the system is being controlled properly. A controls correction is frequently cheaper by an order of magnitude than new equipment, improves comfort immediately, and lowers utility spend at the same time. Sometimes the answer really is a new rooftop unit. It should just be the second thing you check, not the first.
7. Turn service history into a capital plan
PM reports have a habit of landing in a folder and staying there. That's a wasted asset.
We use HVAC service data to build the capital plan, weighing equipment age, repair frequency, tenant impact, efficiency decline, parts availability, downtime risk, replacement cost, and lease expiration timing.
The goal is simple: replace equipment on your schedule instead of the weather's. Ordering a rooftop unit in September with a planned crane day is a completely different transaction than ordering one in a January emergency, when lead times stretch, premiums apply, and a tenant is watching space heaters do the work your building should be doing.
Sequencing against lease expirations matters too. If a major tenant's renewal lands in 2028, the mechanical systems serving their space should be sound well before that conversation starts.
What this looks like across the Upper Valley
No two buildings here carry the same mechanical profile. A medical office off Route 120 in Lebanon runs on a different set of constraints than a converted mill in Windsor, a retail block on 12A in West Lebanon, or a professional building in Hanover competing for Dartmouth-adjacent tenants.
What holds across all of them is the operating principle. Buildings in this region face roughly seven months of heating demand, real cooling load in July and August, and shoulder seasons that swing 40 degrees in a day. Systems get worked hard. Reactive management is expensive here in a way it isn't in milder climates.
Frequently asked questions
How often should commercial HVAC be serviced in Vermont and New Hampshire? Twice a year at minimum, with heating startup in early fall and cooling startup in spring. Buildings with rooftop units, high occupancy, or aging equipment usually need quarterly service. Filter intervals should be set by actual loading, not by a default schedule.
Why do Upper Valley buildings have more HVAC issues in spring and fall? Because outdoor temperatures swing widely within a single day and many older systems can't change modes quickly. A building may need heat in the morning and cooling by afternoon. Two-pipe systems and manual changeover setups struggle most.
Is it cheaper to repair or replace an aging rooftop unit? It depends on age, repair frequency, parts availability, and efficiency. As a rule of thumb, once annual repair costs approach a third of replacement cost, or once parts require sourcing delays, replacement usually wins. The bigger factor is timing: planned replacement always costs less than emergency replacement.
What does a property manager handle versus the HVAC vendor? The vendor performs the work. The manager defines the scope, verifies it was completed, tracks patterns across the building, coordinates tenant communication, and translates service history into capital planning. Buildings without that layer tend to pay for maintenance without receiving its benefit.
Which towns does CTR Property Management serve? CTR manages commercial property throughout the Upper Valley. In Vermont: Norwich, Hartford and White River Junction, Woodstock, Windsor, Thetford, Hartland, Sharon, Tunbridge, Bradford, Fairlee, Barnard, and Pomfret. In New Hampshire: Hanover, Lebanon, Canaan, Claremont, Cornish, Enfield, Grantham, Haverhill, Lyme, Newport, Orford, Piermont, Plainfield, Sunapee, and New London.
Final thought
Commercial HVAC management is the fastest way to tell whether a building is run proactively or reactively. Tenants figure it out within their first winter.
Mechanical discipline protects tenant satisfaction, holds operating costs down, and keeps capital spending on a schedule ownership controls. In a region with this climate and this fuel picture, that discipline shows up directly in net operating income.
