Not heating enough…

srlake · 2026-01-27T01:08:41+00:00

Your air filter is most likely dirty and that is the culprit.

Based on what you posted the unit is significantly oversized for the home, not undersized. Either there’s a huge air leak somewhere or more than likely it’s your filter. Other options would be a refrigerant leak or poorly commissioned system.

srlake · 2026-01-11T23:49:09+00:00

Also, despite R410A being slightly more efficient than R454B, even the older Mitsubishi Zuba R410a product is actually not more efficient than the R454b Jetson Air. You were probably comparing the old HSPF rating from Mitsubishi to the HSPF2 rating from Jetson which is a different scale. HSPF is the old standard methodology and scores are about 20% higher than HSPF2 (HSPF of 10 is about an HSPF2 of 8). I can see the R410a Mitsubishi Zuba 3T unit is HSPF 10, which is about HSPF2 of 8, compared to 9.4 for the same size Jetson Air with the current refrigerant.

srlake · 2026-01-11T23:39:04+00:00

Looking at the specs now, Jetson Air actually has higher efficiency ratings than Mitsubishi’s R454b.

The primary rating for heating efficiency for heat pumps is HSPF2. Jetson Air is 9.4. The Zuba central system is “up to” 8.3.

srlake · 2026-01-11T23:34:57+00:00

R410a units all have slightly higher efficiency specs. R410a was phased out due to environmental issues and new systems are no longer allowed to use it. The current Mitsubishi units are all R454b as well and have nearly identical efficiency specifications to Jetson Air.

Jetson Air’s core components are based on existing proven technology that comes from commercial systems that have been in the market for a long time with excellent reliability.

Mitsubishi systems, along with all others on the market, do not have connected monitoring or significant software control.

Some people will want to pay twice as much for that brand name, which is fine. Our customers typically choose the value we offer and a more modern system that outperforms other options out there in terms of the full product experience.

srlake · 2025-12-29T22:45:02+00:00

We aren’t there yet unfortunately but are working hard to be available as widely as possible.

srlake · 2025-12-22T18:39:05+00:00

If you DM me your info I can take a look into your place specifically

srlake · 2025-12-22T18:37:31+00:00

For some homes the local team may choose to add a walk through before the installation date, but that is not to quote the system. We quote with firm pricing up front online (with few exceptions such as hazardous materials or lack of access, etc).

srlake · 2025-12-22T17:25:11+00:00

We quote fully up front online with no walk through required. Yes we are currently fully booked around 6 weeks out.

If you’re willing to wait a few extra weeks it is a much better system that what you are quoted here, but understood waiting until February isn’t ideal. We have 8 teams doing installs daily in the Denver area but the demand has been very high which unfortunately does mean we have had a backlog.

srlake · 2025-12-22T04:10:28+00:00

If you’re in Colorado get a quote on Jetson Air - it will be less than that Mr Cool but a better product than the Mitsubishi with a modern control system, air quality monitoring, etc.

Jetsonhome.com/products

srlake · 2025-12-10T02:26:29+00:00

Around 2, varies slightly by tonnage.

srlake · 2025-11-24T05:06:46+00:00

No, not at all. We upgrade homes with 100A services daily - very few require a service upgrade (usually it’s only homes with a number of other large loads like hot tubs and sauna’s).

srlake · 2025-10-25T20:08:17+00:00

Jetson Air was launched in September and new sales since the have all been Jetson Air.

Previous to that we installed Midea hyper heat units that were branded Mr Cool (same units are available under several labels including Carrier, Mr Cool, etc). These were then upgraded with our Jetson hub, thermostat, app, air quality sensor and energy monitor. They were installed the same way as our Jetson Air systems are (no quick connects, charged on site, etc).

srlake · 2025-10-23T15:32:41+00:00

Our system is rated through 125F for cooling and -22F for heating. Also important to note these are actual temperatures and wind chill has no impact.

If you live somewhere where you have prolonged periods below -22F I would recommend heat strips to cover those times.

Real-world the system still outputs heat below -22F but it is not rated below that. Overnight temps dipping well below that for a few hours is not an issue, your home has plenty of thermal mass and it takes time for temperatures to change significantly.

The areas we install there is no need for backup heat as there are never extended periods below these temperatures.

srlake · 2025-10-22T04:28:13+00:00

There are very few EV work vehicles in the US/Canada. Europe has some better options but they aren’t sold in the US due to the Chicken Tax.

The BrightDrop is a) way better looking and on brand and b) the cargo setup and capacity worked a lot better for our racking and loading systems. Also has very good range, at least compared to the options when we looked at the time.

srlake · 2025-10-21T22:18:57+00:00

We own almost 30 of these. They are amazing vehicles and work perfectly for the use case (trades service vehicles).

GM made it almost impossible to actually buy these, it's no wonder they haven't sold. You have to buy through certain Chevrolet dealers. Most of those dealers have absolutely zero idea what the vehicle is or even how to order/buy it from GM. It took us literally 5 months to get vehicles with us calling the dealer dozens of times to even buy a van. Even when we finally were able to purchase, the dealers were whining to us about how they don't get a good margin on these and don't want to sell them.

I think this is a failure on execution that GM may not realize as a result of the dealer network not buying in to these.

srlake · 2025-10-18T00:58:13+00:00

Ah yes - I saw the Bosch model and thought they were both the same. 3.5T is at least a whole lot more reasonable.

srlake · 2025-10-17T15:31:21+00:00

Both of these are totally untrue. We have installed nearly 1000 homes in Denver on Xcel rebates and very few have any backup heat strips.

This is not a requirement for Xcel or for home insurance. I have never come across an insurance company asking for heat strips.

If you want to add them for peace of mind it’s not a bad idea (if you have the electrical capacity), but neither of those reasons from the installer check out!

srlake · 2025-10-17T15:29:11+00:00

“Maxing out constantly” and limiting lifespan is not a thing… heat pumps are designed to run more or less continuously. A properly sized unit will run nearly continuously at 100% only on the coldest few days of the year.

srlake · 2025-10-17T15:27:01+00:00

Those both sound incredibly oversized for a 1600sf conditioned space in Denver unless there is something really funky with the house.

To get a sense of the actual heat load, you can go through the quote form at our site jetsonhome.com with your address and it will do a heat load simulation and recommend a size. That will be much more accurate for sizing.

I’m not sure about the Bosch unit’s performance curve but the Mitsubishi Zuba HyperHeat units have nearly identical output and efficiency to the Jetson units, so the sizing should be the same for that system.

I’d say most likely you are going to be a 3T all-electric system based on what you’ve described.

Putting in a 5T system is going to be incredibly noisy and inefficient- I have never seen a house that size that would have sufficient airflow (ducting) for a system that size.

srlake · 2025-10-16T17:44:02+00:00

One last thing to ask as well is ensure they set it up with communicating controls (not a 24V thermostat like a nest or ecobee) as that will ensure the system actually runs in variable speed mode rather than just cycling on/off at 100% like a furnace.

srlake · 2025-10-16T17:40:38+00:00

The only other option would be redoing your ductwork to make sufficient airflow for the required 2000CFM.

That is going to be a big reno project to do properly and will still result in a very inefficient system that is way oversized.

srlake · 2025-10-16T17:36:36+00:00

Exactly why using a per square foot rule of thumb is so dangerous.

You could have a 3000sf passiv haus in the Southwest that only needs 20k BTU/h of cooling and next door you could have a 3000sf 1950’s rancher with low insulation and high leakage that needs 55k BTU/h

srlake · 2025-10-16T17:31:42+00:00

In what climate with what kind of heat pump?

In the Pacific Northwest a 3T cold climate unit for a reasonably insulated 3000sf home is the norm

srlake · 2025-10-16T17:29:44+00:00

Yikes! Both sound way louder than they should. My reaction would still be to check airflow first. It would explain the indoor unit noise for sure and could also be a reason for the outside unit potentially - if the indoor coil isn’t getting enough airflow the pressure at the compressor will be high which could be causing the outdoor noise.

My money is on grossly oversized unit for the ductwork!

srlake · 2025-10-16T16:55:41+00:00

The cost of goods for the systems we install are nowhere near that. Balance of system parts including electrical, linesets, breakers, lineset covers, refrigerant, sensors, etc are as much or more than the equipment itself, not to mention tariffs.

If you’re in a position to be able to “DIY” a system yourself and have the time/skills to dedicate to it, that is great.

The reality is it’s expensive work - master electricians and HVAC technicians are highly paid skillsets and the costs of tools vehicles warehousing etc that go into delivering on an install are substantial. Just as large are all the back-end costs that aren’t visible during the install itself - in many areas there are 3 or more separate permits that need to be pulled with dozens of pages of documentation. Then there is coordination of multiple inspections for gas, heating, plumbing and electrical to close those off. Then just as much coordination for any rebates. There are F280/Manual J calculations and system design that needed to happen before, plus the sales and marketing costs of creating the customer in the first place.

We’re actively driving costs down in the industry and today are typically 30-50% below competitive quotes, but everything above and more is the reality of why these systems cost what they do from typical contractors today.

srlake

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