Window AC & Portable AC Installation in Mission District 94110, San Francisco

My neighbor recommended R8Works after they installed her AC last week. I see why. It's just straightforward, honest, high-quality work. No upselling, no hidden fees. Just exactly what they promised.

These old Victorian windows are a nightmare. Uneven sills, weird trim. The tech brought a bunch of custom shims and literally leveled the bracket millimeter by millimeter until it was perfect. The dedication to getting it right was awesome.

My cat is terrified of strangers and loud noises. The installer was super gentle, let the cat sniff his tool bag, and worked really quietly. It was the least stressful contractor visit we've ever had.

City code is strict about fire escapes in the Mission. I had a tight spot where I wanted the AC, but it couldn't block the emergency exit. The installer figured out a lateral bracket setup that kept the window functional and fully compliant. Legitimately impressed by the problem solving.

No ugly duct tape or expanding foam mess. They used this really clean, white weatherstripping that matches my window frame perfectly. It looks like the AC was built into the house.

Got a dual hose portable unit. The window kit it came with was trash. R8Works fabricated a solid wood insert painted to match my trim, with two perfect holes for the intake and exhaust. It looks custom-built for my apartment.

Living on the ground floor near the BART station, I was paranoid about someone pushing the AC in. They installed security brackets that lock the window sash down onto the AC unit. It's physically impossible to open the window from the outside now.

We have horizontal sliding windows in our newer condo near the Mission. Standard window units just fall out. They fabricated a custom plexiglass insert on site so my portable AC hose vents perfectly. Super clean look, no drafts, and zero HOA complaints so far.

I live on the top floor of a 3-story walkup near 24th. It bakes up here. The installation was flawless. The heavy-duty exterior support bracket gives me total peace of mind. Highly recommend these guys for any SF flat.

Our building on 24th Street has ungrounded knob-and-tube wiring in some walls, so we were really nervous about getting a powerful AC. The technician not only secured the unit with weather-stripping high-density foam seals to keep the coastal fog out, but also advised us on a low-amp unit that wouldn't trip our breakers. Super professional and they really understand San Francisco architecture.

Needed a solution that I could easily take with me when my lease ends. They used a non-permanent tension bracket that holds the AC perfectly but leaves zero trace when removed. Exactly what I asked for.

Tried to install a heavy AC myself in my Mission District apartment and almost snapped the old sash window rope. Called these guys in a panic. They brought specialized support brackets for the plaster and lath walls and had the unit safely anchored in under an hour. Not a single crack in the plaster. Worth every penny if you live in these older wood-frame buildings.

I was paranoid about the AC falling out because my window frame is slightly rotted. The installer identified the solid wood deeper in the frame and used extra-long lag screws for the bracket. It feels incredibly solid.

I rent a third-floor flat right on the Valencia Street corridor. The street noise is crazy, and my landlord threatened to evict me if I hung anything over the sidewalk that violated city codes or blocked the fire escape. R8works set up a portable AC with a custom 1/4 inch clear plexiglass vent for my tall Edwardian windows. The seal is completely draft-free, blocks the street noise, and my landlord actually approved it.

I live on the 3rd floor overlooking a busy sidewalk. My biggest fear was the AC falling out and crushing someone. The heavy-duty bracket they used is bolted into the thickest part of the window sill. I could probably stand on it. Very reassuring.

Living in a 1910s Victorian near Dolores Park is great, but the HOA is an absolute nightmare when it comes to window units. These guys came in with their heavy-duty accordion brackets and set up my 12,000 BTU unit without drilling a single pilot hole into the historic exterior wood. The counterweight ropes in my old sash windows are super fragile, but the bracket took all the weight perfectly. Totally saved my summer.

I gave up on window units because of my security bars. Bought a portable AC but the exhaust hose kept falling out of the flimsy plastic slider. The tech permanently secured the exhaust port into the window frame with a custom latch. Now I can just snap the hose in and out when I need it.

My husky was miserable during the hot days. I bought an AC but couldn't install it because of my bad back. They came same-day, got it set up in the living room window, and now the dog refuses to leave that spot. Thank you!

We have questionable wiring in our 1920s building. The tech checked the outlet with a multimeter before plugging in the 12k BTU unit to make sure the voltage drop wasn't dangerous. Really appreciated the extra safety check.

I called with a bunch of annoying questions about BTU sizes and window dimensions before booking. The person on the phone was incredibly patient and helped me pick the right AC for my space. The install went exactly as planned.

My old AC used to spit water back into the room. The R8 tech explained that it wasn't tilted back far enough. He installed the new one with the perfect pitch, and now all the water drains exactly where it should outside.

Previous tenant left a sketchy wooden block holding up the AC. It was sagging and leaking water inside. R8Works ripped out the janky setup, installed a proper powder-coated steel brace, and re-pitched the unit so it drains outside. Night and day difference.

My window sills are slanted weirdly because the house has settled over 100 years. The tech used some custom shims under the bracket to make sure the AC itself sat perfectly level. You can't even tell the window is crooked anymore.

Ground floor apartment on 24th street. Noise and security are big issues. They installed a window bracket that locked the sash in place so nobody can force it open from the sidewalk. Plus, they sealed it so well with thick foam that I barely hear the street traffic anymore. Worth every penny.

My last AC unit dripped water all over the downstairs neighbor's window. The R8Works installer used a smart little bubble level to ensure exactly a 3-degree downward tilt outside. Not a single drop hits the window below me anymore.

He noticed that the power cord was hanging awkwardly over my radiator, which could be a fire hazard in winter. He used some sleek white cord clips to route the cable neatly along the baseboard to the outlet. Very thoughtful.

Working from home in a top-floor Mission flat with zero insulation. It was hitting 90 degrees inside. The crew navigated our horribly narrow, steep staircase carrying a massive 14,000 BTU unit without scratching the walls. Setup was fast, and the electrical check they did first gave me peace of mind with our old knob-and-tube wiring.

I live in a 4th floor walk-up. No elevator. The installer carried my 80lb AC unit up all four flights of stairs like it was nothing. I was exhausted just watching him. Incredible work ethic.

I think the whole process took less than 40 minutes. He had the bracket mounted, the AC secured, and the side panels insulated before I even finished my coffee. Super efficient.

I didn't realize that a poorly installed AC vibrates against the window frame and makes a ton of noise. The installer used some thick rubber vibration dampening pads under the unit. I can barely hear the compressor running now.

My old window AC kept tripping the breaker every time the fridge kicked on. The R8 tech checked the amp draw, realized the issue, and actually helped me run a heavy-duty appliance extension to a different dedicated circuit in the kitchen. Above and beyond.

Was terrified of anyone touching the walls in my rental. The plaster and lath here turns to dust if you look at it wrong. The guy used a stud finder (which barely worked on these walls) but managed to anchor the support brace directly into a hidden stud without cracking a single inch of plaster. True craftsman.

I appreciate contractors who respect your home. Wore shoe covers, put down a mat for his tools, and took all the empty cardboard boxes down to the recycling bin for me. The AC works perfectly and the install looks incredibly neat.

We have these narrow, tall Edwardian windows that standard AC sliders just don't fit. Instead of stuffing it with cardboard, they custom-cut a piece of thick acrylic right on site. It looks completely built-in and lets the light through. Highly recommend for weird old SF houses.

I live in an 1890s flat near Dolores Park. The old counterweight ropes in my bedroom window are super fragile. Tried putting a window AC in myself last year and the window slammed down, almost breaking my hand. The tech knew exactly how to support the 10,000 BTU unit without stressing the old frame. Used a custom bracket, no drilling into the exterior wood trim. Lifesaver during the heatwave.

Before the AC install, that window always rattled when the wind blew. The tech packed so much high-quality insulating foam around the unit that the window is now completely silent and draft-free. It actually improved my insulation!

We have a newborn and live right off Guerrero. The installer took his boots off, worked incredibly quietly, and even asked if the drill noise would wake the baby. The AC is solid as a rock and the room is finally cool enough for nap time.

The tech noticed my old plaster walls and immediately knew he couldn't use standard drywall anchors for the cord management clips. Used specific plaster anchors so nothing cracked. It's those little details that make a huge difference.

I had to reschedule twice because of work meetings, and the dispatch team was super understanding. When the tech arrived, he walked me through exactly what he was going to do before he started. Very transparent process.

The Delta Breeze doesn't reach my alleyway apartment. Been sweating for three summers. R8Works got me on the schedule fast. The installer, Mike, was super chill, explained how the bracket distributed the weight, and cleaned up every speck of dust before leaving. Sleeping like a baby now.

Our new condo board on Valencia St is ridiculously strict. You cant even look at the stucco facade without getting a fine. R8Works installed a dual-hose portable AC and routed the exhaust perfectly through our weird casement window using a custom plexiglass insert. The HOA president came by and actually asked for their number.

My bedroom window is super narrow, only 22 inches wide. I bought a specific vertical AC unit but the mounting hardware made no sense. The tech figured it out instantly, secured it tightly, and made sure the casement window could still lock.

My landlord is a third-generation Mission owner who treats the original wood trim like a museum piece. The tech used a pressure-mounted support system. Not a single screw went into the sill. Landlord inspected it yesterday and actually nodded in approval. Miracle workers.

Booked them after my DIY attempt resulted in a dropped screwdriver onto the neighbor's patio. They had the 12k BTU unit perfectly leveled and sealed in about 45 minutes. The foam insulation job is incredibly neat, not that ugly duct tape mess I usually see.

I hate how ugly window ACs look from the inside. The installer took the extra time to trim the foam panels perfectly straight and even added some white weather stripping tape over the seams so it blends right into my white window frames. Very clean look.

Called them frantically when that unexpected September heatwave hit. They squeezed me in. The guy had to deal with a painted-shut window first, gently scored the edges, opened it without damaging the 100-year-old paint, and got the AC in. Hero.

I bought a monster 15k BTU unit not realizing it weighed 80 lbs. No way I was lifting that into my 2nd floor window. The R8 team hoisted it up, secured the heavy-duty exterior bracket, and angled it perfectly for drainage. Didn't even break a sweat.

Left them alone in my apartment while I ran to the corner store. Came back to a perfectly installed AC and a locked door. Very professional crew that you can trust in your home.

I have those windows that crank outwards. Standard ACs don't work. They built a custom plexiglass insert with a cutout exactly the size of the AC, and sealed the edges with silicone. It looks like a high-end architectural feature.

I debated just watching a YouTube video and doing it myself, but honestly, having it done professionally was so worth it. No stress, no risk of dropping it, and the insulation job is way better than what I would have done with cardboard and duct tape.

As a single woman, I appreciate when contractors are just professional and get the job done without being weird or condescending. The installer explained the controls, showed me how to clean the filter, and was out in under an hour. Great service.

They texted when they were 15 mins away, parked down the block so they wouldn't block my driveway, and had everything done fast. In a city where contractors ghost you half the time, this level of communication is gold.

Working in an un-air-conditioned room with three monitors was melting my brain. The tech got the portable AC exhaust routed through a very tricky sliding window perfectly. The room is an icebox now. My productivity has doubled.

I was going to put the AC in the living room, but the tech pointed out that due to the layout of my railroad-style flat, putting it in the hallway window would cool both the bedroom and the living area much better. He was totally right.

Woke up sweating at 3 AM. Submitted a quote request online. They called me at 8 AM and had a guy at my door by noon. In the middle of a heatwave, that kind of speed is unheard of.

Usually window ACs let in all the smog and smoke during fire season. The weatherstripping job they did is next level. Used high-density foam and sealed every tiny gap around the corrugated side panels. My air purifier actually shows better air quality now.

They laid down drop cloths before they even opened their tool bags. Drilled a few holes for the bracket, vacuumed up the sawdust immediately, and even wiped down the window sill when they were done. Impeccable cleanup.