I suspect it would work well for what it was meant for. I had it installed to replace a boiler that sprung a leak. The biggest problem that is a design flaw rather than how I am using it is smoke coming out the door when I feed more wood into it. I just ordered a draft booster so it can suck air and smoke up the chimney when I open the door. I have in-floor heat and it doesn't disperse the heat fast enough to keep up with what the boiler can put out. I plan on putting in some radiators so I can run the boiler a little hotter. It took me a while to figure out how to change the electronic settings and I am still playing with them to get it to run right. There is a low fuel alarm when the fire is dying down that worked once when I didn't want it to and hasn't worked since. The air intake fan is supposed to step down when the water leaving the boiler is getting close to the limit I set, but it doesn't step down in speed, it just turns off when the water gets to the temp limit and back on when the temp comes back down. They sold me a valve for $125 but my installer didn't know what to do with it and didn't use it. Instructions on how to set up the boiler in different configurations are slim, but support is quite responsive, I just hate to keep emailing them so often.

Easy diagram to understand how to hook it up. Customer support was great. just ordered some 1.5 ton fan heads to cool house in the summer.

It is wonderful, we finally made it work. I have to say that Allan and Jesus are wonderful

Plumbing in unit nice and clean. Nice quality parts. Makes it very simple to hook up unit. Would recommend it for new or retrofit installs

Great unit at a great price. Very pleased and the wifi thermostat is a big plus. The old unit had a three speed manual fan.

It looks to be a very good boiler I am working on the plumbing now.

Heat pump is great. Pump station is great. Would like to have more information on how to operate everything. Things such as temperature controls. information on how to set the controls will be a little bit better you are very good customer service on helping with set it up they are very polite.

Installation was relatively easy and it took approximately one hour to complete it, download the app, and connect it to WiFi. Works great!

Need better information

My old wood boiler was getting up in age. I was reluctant to try this as I never heard of the brand. Order it in the spring took a bit to get. Just got it hooked up. Directions are very lacking… mine was a simple set up just running to a coil on the central unit. But if it performs well this year I will probably expand it… also I chose the Duo for the off chance to burn regular wood logs While I plan to mostly run pellets

I am unable to use the heat pump station because of its size. I expected a much smaller unit (the dimensions listed on the website) and had a place for it. I am guessing the new station is much larger. I am hoping to return it. It is still in its original packaging

Looks like good unit, Long wait!
Waited several months for delivery of 3.5T unit due to shipping issues and COVID lockdowns.
Allen and others at MBTek were patient and as helpful as they could be with something outside their control.
3/4 of my energy bill is for heating between Oct and April. Hoping for a slight overall reduction - it'll depend on future gas prices.

Unit arrived mid April when my radiant floor system goes dormant until Oct. Lots of time for installation!

Update:
Now it's installed and running.
Pipe installation was very simple, only complicated by the positioning of the buffer tank. Turned it on and it ran with just the defaults set. It's silent - only audible within 3'. Heats the buffer tank (50gl) to temp in under 30mins (previous gas heater took ~40mins).
The instructions for the wiring took a little educated guesswork, but everything worked first time and it responds correctly to the house thermostats and the water temp settings.

Now we're attempting to add a DHW indirect tank as the old gas unit has just sprung a leak. Expecting great things.

UNI 40 wood boiler, 130K BTU

Shipping is slow. The unit looks great just waiting for the air handler so I can finish hookup and see how it works

Boiler delivered, stayed in the garage in its original wrappings until 15 July 2023. Basement prepped, moved boiler into area. Crate and packaging look good, at first glance, everything looks ok. Complete unvailing, inspection and installation being scheduled for middle of Aug 2023. Mbtek kept me informed of shipping and delivery times and dates, happy thus far. Keep you informed.