Ok so this is our wheelchair van, and I'm pretty sure I'm going to have to take it to the shop but I am hoping for an idea of what is going on.

We have a 2014 Dodge Grand Caravan with less than 45k miles that's been fully modified for wheelchair use. (This shouldn't impact much but it does mean the electric is a bit more complex). It has separate front and rear controls and separate driver passenger front controls for the HVAC. The rear works fine, but the front passenger stopped switching off of the heat maybe a year ago. I forgot about it because we don't drive the car often and since we don't have a front passenger seat in the vehicle, no one is right in front of those vents. The driver side and rear kept working fine.

In the past month, the front vents no longer have any air movement with the very small exception that occasionally when I switch the AC on there's a bit of a very short, light cold breeze. Even more rarely sometimes at highway speeds this breeze will continue longer.

No setting change this afaict, there's no defrost, no switching to a different temp or set of vents that makes the blower work.

I did check the fuses under the hood and they look fine, I haven't gone behind the glove box, in part because I suspect this is going to be out of my skill set.

Suggestions for what could be the cause? Again I know I'll need to get it to a mechanic just hoping to have knowledge going in.

Hi everyone,

On one hand, I'm very lucky: last year my partner and I purchased our first house! It feels great to hop off the renter hamster wheel.

On the other hand, we had to make some compromises when we bought the house: I wanted to limit our search to houses that already had central air (heating and cooling), because we both work from home and I really want our house to be comfortable year-round. Unfortunately, in Northern New England, that eliminates around 90% of houses. So we compromised and bought a place that has a furnace with ductwork, hoping to eventually add cooling using the same ductwork. Last year, I reached out to a couple of contractors to get a vague sense of how possible that might be. Consensus? Potentially expensive, but feasible.

My situation:

• our house is small, ~1100 square feet in the finished upstairs
• half of the upstairs has shit insulation, other half is decent after renovation
• we currently have a 100k BTU oil furnace that absolutely keeps up. In fact, as far as I can tell, it's massively oversized -- even on the coldest nights (around -20 or so most winters, including this one), it only kicks on ~50% of the time
• we used around 500 gallons of heating oil from September-May (the heating season)
• our furnace is awkwardly tucked between the outlet chimney and three walls, which makes accessing it a pain (and complicates installing a coil on top; I'm not sure if there's enough room).
• thanks to a nearby massive hydroelectric dam, our electric rates are about half the average New England electric price (and come from a pretty environmentally-friendly source!). So the more heating and cooling I can do with electric, the better IMO. I'd rather pay a bit extra to heat with clean electric than save on propane/oil if fossil prices come down (big if).

With the warm season upon us, I'm feeling the heat during my work-from-home days and trying to get cooling installed before the temperature really starts cooking. And, despite having a furnace with existing ductwork that covers every room in the house (90% of which is directly accessible through unfinished basement ceilings), every. goddamn. contractor. has. recommended. minisplits.

But I don't want minisplits. I know it's easier for them. I know it's cheaper. I know most contractors in the area have installed hundreds of minisplits but very few central systems (let alone a combined heating/cooling setup where you have to worry about balancing summer dehumidifying with extreme cold efficiency). I know I'll have to clean out and insulate my ducts. Minisplits would surely work OK, but I really don't want to install one in each of our three bedrooms, plus one (or more) in our open-layout kitchen/living/dining space, and then still deal with no direct cooling in the bathrooms. Aesthetically, my partner and I both find minisplits ugly, and our house is small enough that most minisplit designs would make the tiny bedrooms feel even more cramped.

Ideally, I'd rip out our existing furnace (and oil tank!), install a cold weather heat pump in its place, insulate the ducts, and call it a day. But every contractor also advises that I "keep the old furnace around" in case the heat pump breaks (seriously?) or in case the heat pump can't keep up on the coldest days (fair enough). And then we take a look at the existing furnace, conclude it would be hard to add cooling on top of it, and they tell me to think about minisplits again.

So I guess after all of this, I'd really appreciate some advice from tilderinos with more home improvement experience than myself. Should I think about this differently? How on earth do I find a contractor who knows what they're doing with central heat pumps who doesn't push me aggressively towards minisplits or keeping my dirty, noisy, expensive furnace around? Should I just roll over, give up on my central cooling dreams, and install some minisplits?

I am looking for a heat pump system that:

1. Can do ground source or water cooling
2. Connects to a Mini split system
3. Can do something like 3 - 5 wall mounted units.

I have already found one provider at Multiaqua, but they are redesigning their unit and it is currently not available. I hear that Dandelion seems to make something like this, but I can't buy from them. I have a quote for a conventional air-to-air minisplit system, but the cost is really high and it seems like I should at least look for some alternative.

This seems hard to find, and I'm not sure why.

In December 2023, I had the AC replaced for the upstairs of our house. Installed was a "Bryant Preferred 2 Ton" 227TAN02400A and the corresponding Fan Coil FV4CNF002L00.

Two weeks ago, when the heat came (I'm in NE Florida), I noticed that our upstairs was not able to keep up. We keep it set to 73 both up and downstairs and the upstairs unit was just continually running from 11AM-7PM and never getting below 76-77.

A tech came out and let me know that, based on the pressures he was seeing, the expansion valve and coil needed to be replaced. It was under warranty, so I said sure, go for it. The install was scheduled for Monday, a week ago.

That tech showed up last Monday and replaced both parts. When he left, he said that we should be good to go and everything was looking great. Last week was a milder week for temperatures (mid to high eighties), but I did notice the humidity was still quite high in the upstairs (in the 70's and low 80's).

Things still didn't seem right by the end of last week, so I called again and they scheduled someone to come out today.

When the guy showed up today, he checked the pressures and said I was on the low side of the manufacturer's specs. He topped it off a bit and brought me to the high side of the manufacturer's specs.

Of bigger concern he said that my drain pan was cracked. He said this had been identified by the very first tech and the part had been on order since then. He said they installed the coil and valve to get things cooling better even though they didn't have the drain pan in yet.

Today was the first I heard anything about the drain pan. Anyway, they are trying to get that as soon as possible and will have to install it when it comes in.

So, now that the background is done, here's my question. Would this cracked drain pan cause my cooling issues? Right now (4PM) it is 97 outside. My downstairs unit has no problem getting me to 73 and 50% humidity (and shutting off). The upstairs unit is running non-stop and is at 76 (set to 73) and 83% humidity.

I understand that the crack in drain pan is making it "all wet" inside the air handler. I understand that can cause the humidity to be high, but would that also be the cause for cooling issues?

I'm right on the edge of buying a mini split for our shop space and I'm having a bout of indecisiveness.

To preface, we are located in south/central Texas. The shop is a standalone structure, is fairly well insulated but has a 2-car garage door and a single-pane window, so it isn't ideal. It's 625sqft with 9 foot ceilings. We have various tools that will be in use but nothing that creates excessive heat.

We are quite limited in funds so I'm not going with an HVAC company, nor am I going with a mr cool or other diy friendly unit due to cost. I'm capable to do the install myself, I'm not overly concerned about that.

I was originally looking at the 18k (1.5ton) senville leto. I ran various calculators and they all suggested this size would be enough up to 1000sqft or so. However, since I have 9 ft ceilings and I live in a hot climate and I have the big door and crappy window, the calculations pushed my 625sqft up to around 900 or so equivalent sqft in some cases and in others as high as 1200.

Due to my circumstances, I think I've convinced myself to move up to the 24k unit instead. I don't think it's too over provisioned for my specific scenario but I would like to hear your thoughts on how off the mark I am here.

Apart from size, there's also the question of efficiency. The other model I was looking at is the Aura by senville, and the difference is a higher seer2 rating and energy star certification.

Now, doing rough math, the difference in efficiency would be paid off by the savings of the more efficient unit in something like 8 or 9 years based on projected usage and my energy costs. I'm a pessimistic person and don't expect this unit to last 8-10 years. This is a cheap way to get the space comfortable to work in so that my side business can progress, and I would think if it's still going in that amount of time, I'll be able to afford a nicer unit by then.

However, after saying all that, I do notice that the capabilities of the Aura unit are greater. It is advertised to work in -20f weather while the leto works in as low as 5f.

Now, being in Texas, my primary concern is cooling, not heating, but no where can I find if the Aura system is more capable in hotter weather like it is in colder weather. This is slightly concerning because it seems most people use these primarily as heat sources and secondarily as cooling sources, and my situation is reversed.

Does anyone have any input as to whether the higher efficiency system will make a noticable difference in cooling performance when it's 110f outside?

Thanks for weathering my wall of text.