Molly Brown House
The Molly Brown House on Pennsylvania Street is the neighborhood's best-known mansion and our reference point for the Millionaire's Row blocks.
Your local Capitol Hill HVAC service
HVAC in Capitol Hill for Subdivided Mansions
One boiler, six apartments: that is the Capitol Hill heating problem. We work Denver's densest neighborhood, from the Millionaire's Row mansions on Pennsylvania and Grant to the brick apartment buildings off Colfax. Call (720) 806-7634 and tell us what your system is doing.
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Furnace · AC · Heat pumpsRepair & replacement
Services available in Capitol Hill
HVAC Services We Run Through Capitol Hill
Capitol Hill is Denver's densest neighborhood, and its housing is a subdivision story: grand 1870s–1890s mansions cut into apartments, early-1900s brick apartment buildings, and modern high-rise condos. One boiler serving many apartments, and units with no ducts and no yard, are what define the work.
Boiler RepairA central boiler in a subdivided mansion or an early-1900s apartment building serves several households from one mechanical room. The system gets pressure-tested, the circulator and expansion tank checked, and the flue verified — and the findings go to the building, since a shared system needs a building-level answer.View details →Ductless Mini-Split InstallationApartments and condo units with no ductwork and no yard for a condenser take cooling through a wall head. One unit gets its own control without touching the shared system, and the outdoor unit's placement gets checked against the building's rules first.View details →Furnace RepairIn a Denver Square or a converted mansion running a gas furnace, the check runs from the burner to the flue and then to the rooms themselves — a divided house often has one thermostat serving households that want different temperatures.View details →Heat Pump InstallationA condo or a small unit that needs heating and cooling from one system can take a heat pump — provided the building allows an outdoor unit. Confirm the building's rules on exterior equipment first, because condo associations govern it in most Capitol Hill buildings.View details →Indoor Air Quality ServicesDense blocks mean more windows-closed living when smoke arrives, and older buildings mean more dust in the air that does get in. Media filters, fresh-air ventilation and a check for dust bypass at the return keep the air in a unit cleaner through smoke season and beyond.View details →
More than a service list
How We Run HVAC Work in Capitol Hill
A subdivided mansion is not a single-family house. These are the three patterns we see most here.
One boiler, six apartments
A grand mansion cut into apartments runs one boiler for every unit, with no per-unit control. The top-floor unit roasts while the garden level freezes.
How we help: We look at per-unit ductless retrofits that give each apartment its own control, and we talk through what the shared boiler can and cannot do before recommending anything.
No yard, no parking, no condenser space
Many Capitol Hill buildings have no yard and no off-street parking, so there is nowhere obvious to put an outdoor unit, and condo associations govern exterior equipment.
How we help: We check the building's rules first, then plan placement, including wall-mounted or balcony options where the association allows them.
Garden-level cold, top-floor heat
Basement and garden-level apartments stay cold and damp while the upper floors overheat, because the original system was designed for one family in one house.
How we help: We give each level its own control where the building allows it, rather than asking a single system to serve a house that is now several homes.
Early warning signs
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Signs You Need HVAC Service in Capitol Hill
01
Top-floor unit roasts while the garden level freezes
02
Boiler runs but radiators stay cold in some rooms
03
No cooling at all in an older apartment unit
04
A knocking or gurgling sound from radiators
05
One apartment controls the heat for the whole building
We know the route
Navigating Capitol Hill: Landmarks We Use
Capitol Hill is the hill east of downtown, and Colfax is its corridor. We use the mansion rows and the park edge as orientation points when routing trucks through the densest streets in Denver.
Cheesman Park
Cheesman Park adjoins Capitol Hill to the east and is the green edge we use to split routes between the park blocks and the Colfax blocks.
Colfax Avenue
Colfax is the neighborhood's southern corridor and the route for commercial and multi-unit calls on this side of the hill.
Governor's Mansion
The Governor's Mansion, also known as the Boettcher Mansion, anchors the historic mansion blocks and helps us orient on the southern streets.
Primary Capitol Hill response zone
Capitol Hill service coverage
Is your street on the route?
These are the blocks and corridors we serve most often in Capitol Hill. Nearby areas may also qualify—call if you do not see yours.
Popular neighborhoods
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Capitol Hill blocks around Pennsylvania, Grant, Sherman and Logan, the Colfax corridor and the Cheesman Park edge.
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Outside Capitol Hill?
Capitol Hill and the Surrounding Service Area
01Cheesman ParkCheesman Park is east of Capitol Hill, where Denver Squares are subdivided the same way and garden-level units need their own control.↗02Congress ParkCongress Park is southeast of Capitol Hill, with bungalows and foursquares that need two different systems.↗03Five PointsFive Points is north of Capitol Hill, where 1870s Victorians sit a block from new townhomes and lofts.↗04City ParkCity Park is northeast of Capitol Hill, where 1890s-1900s bungalows are gaining pop-tops at a fast pace.↗
Capitol Hill HVAC FAQ
HVAC in Capitol Hill: Common Questions
Lion Tech Home Services can help if your question is not answered here.
Call (720) 806-7634 →Ductless mini-splits are the common retrofit for units with no ductwork. The building's rules on outdoor units get checked first, because condo associations govern exterior equipment in most Capitol Hill buildings — the right head in the wrong spot is a job that has to be redone.
The house was built for one family with one system, and now it is several apartments with different sun exposure. Per-unit ductless heads give each level its own control, so the garden level stops freezing while the top floor roasts.
Yes. The system gets pressure-tested and the circulator, expansion tank and flue checked, and the building gets told what was found. A shared boiler is a building conversation, not a single-unit fix, so the plan has to work for every apartment on the loop.
Dense urban blocks mean windows stay shut when smoke arrives, so the air inside gets filtered mechanically instead. Media filtration and sealed ductwork help, and a heat pump can run fan-only filtration with the windows closed.
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Need HVAC Help in Capitol Hill?
A shared boiler, a unit with no cooling, or a top floor that never stops roasting? Call Lion Tech Home Services at (720) 806-7634. We are open 24 hours, 7 days a week.
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Lion Tech Home Services, Denver — call (720) 806-7634, open 24 hours.