Tennyson Street
Tennyson Street runs from 38th to 46th Avenue and is Berkeley's commercial spine, lined with shops and restaurants. It is our reference point for calls on the eastern blocks.
Your local Berkeley HVAC service
HVAC in Berkeley for 1923 Bungalows and Pop-Tops
Berkeley's story is a 1,100-square-foot bungalow next to a 3,600-square-foot new build, and the furnace that has to serve both. We work the 1910s-1950s brick bungalows and Denver Squares off Tennyson Street, where pop-tops doubled the house and the original system never caught up. Call (720) 806-7634 and tell us what your system is doing.
Call any hour
Request service today
Call (720) 806-7634 and tell us what is happening. We are open 24 hours, 7 days a week.
Call Now (720) 806-7634 → No spam. No obligation. Just practical help.Open 24 hours7 days a week
5.0 starGoogle rating · 11 reviews
Furnace · AC · Heat pumpsRepair & replacement
Services available in Berkeley
HVAC Services We Run Through Berkeley
Berkeley's 1920s bungalows keep growing second stories. On some blocks a 1,100-square-foot bungalow shares a fence with a 3,600-square-foot new build, and the original furnace — built for one floor — is the thing that has to serve both. That mismatch drives most of the work here.
Ductless Mini-Split InstallationA pop-top's new second story has no ductwork and overheats while the ground floor stays comfortable. A wall head gives the new floor its own control without opening the 1923 plaster walls below, and the outdoor unit goes where the lot allows.View details →Furnace RepairThe furnace in a Berkeley bungalow basement is often heating a house twice the size it was built for, through original or aging ductwork. The burner, flame sensor, heat exchanger and flue all get looked at, because a furnace stretched this far fails at its weakest link.View details →Air Conditioning InstallationAdding cooling to a bungalow whose ducts were added decades after the house was built starts with airflow — measuring what the runs can carry before sizing anything. The unit gets matched to the duct capacity, not to the floor area on paper.View details →Heat Pump RepairNewer systems in rebuilt homes and pop-tops usually fail at refrigerant charge, the defrost board or compressor draw. The check finds out why a unit is icing up instead of just thawing it, so the same fault does not come back with the next cold snap.View details →Duct RepairBungalows that grew a second story carry crushed flex runs, disconnected joints and undersized runs from two different eras of work. The runs get reconnected and supported properly, so the added floor stops depending on ducts that were never meant to reach it.View details →
More than a service list
How We Run HVAC Work in Berkeley
Half the house is 1923 and half is 2024. These are the three patterns we see most here.
The pop-top problem: cooling a second story that never had ducts
A 1923 bungalow that grew a second story now has a top floor the original furnace and ducts were never designed to serve. The new rooms overheat while the ground floor stays comfortable.
How we help: We look at ductless heads for the pop-top, and we check whether the original system can still serve the ground floor properly before recommending anything new.
Right-sizing when half the house is new
A scrape or pop-top changes the load completely, and the old furnace is usually the wrong size for the new house. Guessing from the old equipment guarantees a mismatch.
How we help: We run a fresh room-by-room load calculation for the house as it stands now, not as it was built in 1923.
Pre-1960 wiring and panel capacity
Berkeley's older homes often need electrical updates, and that matters for HVAC: a heat pump or a new AC needs panel capacity the original wiring may not have.
How we help: We flag panel capacity early, before equipment is ordered, so an electrical upgrade does not surprise you mid-job.
Early warning signs
Have us take a look →
Signs You Need HVAC Service in Berkeley
01
The new second story is always hotter than the ground floor
02
Furnace short-cycles in a house that doubled in size
03
AC cannot keep up on the west-facing side
04
A burning smell when the furnace first fires in fall
05
Rooms added by a pop-top never get enough airflow
We know the route
Navigating Berkeley: Landmarks We Use
Berkeley is northwest Denver's streetcar neighborhood, and Tennyson Street is its spine. We use the two lake parks as the neighborhood's anchors and Federal Boulevard as the eastern corridor.
Berkeley Lake Park
Berkeley Lake Park anchors the neighborhood's west side and is the landmark we use to split routes between the lake blocks and the Tennyson blocks.
Rocky Mountain Lake Park
Rocky Mountain Lake Park sits at the neighborhood's northern edge and is our reference point for calls near I-70.
Federal Boulevard
Federal Boulevard is the eastern boundary and the main north-south corridor for Berkeley calls.
Primary Berkeley response zone
Berkeley service coverage
Is your street on the route?
These are the blocks and corridors we serve most often in Berkeley. Nearby areas may also qualify—call if you do not see yours.
Popular neighborhoods
Check my address →
Berkeley blocks around Tennyson Street, Berkeley Lake Park and Rocky Mountain Lake Park.
Google reviews
Rated 5.0 Stars on Google
5.0★★★★★11 Google reviews
Lion Tech Home Services holds a 5.0-star rating from 11 Google reviews.
Outside Berkeley?
Berkeley and the Surrounding Service Area
01HighlandHighland is southeast of Berkeley, where 1890s-1930s brick Victorians sit on high ground above the river.↗02Sloan LakeSloan Lake is south of Berkeley, another northwest Denver neighborhood of bungalows and new builds around the lake.↗03Villa ParkVilla Park is south of Berkeley, with early-20th-century homes on small lots near the Colfax corridor.↗04West ColfaxWest Colfax is south of Berkeley across 38th Avenue, where the commercial corridor meets older residential streets.↗
Berkeley HVAC FAQ
HVAC in Berkeley: Common Questions
Lion Tech Home Services can help if your question is not answered here.
Call (720) 806-7634 →The furnace and ducts were designed for a one-story 1923 bungalow, and the new second story has no ductwork of its own. It overheats while the ground floor stays comfortable, and one wall head upstairs is usually the fix — not a bigger system downstairs.
Yes. Central AC is usually retrofitted here, and ductless mini-splits are the common alternative when the ductwork is too small or the walls are plaster. Airflow gets measured first so the equipment matches the house as it stands.
It can. Pre-1960 homes often have limited panel capacity, and a heat pump needs room on the panel. That gets flagged early, before equipment is ordered, so the plan is not surprised by the electrical work.
A repair visit opens with the symptoms — when it fails, what it sounds like — then moves through ignition, the blower, the exchanger and the venting, and the findings get explained before any work begins. In a Berkeley bungalow, the ductwork's age gets a look too, since the furnace and the ducts fail together more often than apart.
Berkeley HVAC service is ready
Need HVAC Help in Berkeley?
A second story that never cools, or a furnace that cannot keep up with the house it serves? Call Lion Tech Home Services at (720) 806-7634. We are open 24 hours, 7 days a week.
Request Berkeley service
Call (720) 806-7634 — open 24 hours
Lion Tech Home Services, Denver — call (720) 806-7634, open 24 hours.