A Quick Note Before We Dive In
I manage purchasing for a mid-sized engineering firm—about 200 employees across two locations. We're not a repair shop or a construction company, but we maintain a lot of specialized equipment. My job involves sourcing everything from HVAC components to basic office supplies. This FAQ covers the most common questions I've encountered over the years, particularly around tecumseh hermetic compressors, air filters of various sizes, and the occasional oddball request (like a burner phone). Take everything with a grain of salt; my experience is mostly with mid-range orders, not high-volume distribution.
(Prices as of January 2025; always verify current rates.)
Your Tecumseh Questions, Answered
Q: I need a specific tecumseh hermetic compressor model. Are these easy to find?
This is where things get tricky. If you have the exact model number from the unit, you're in a good spot. For most mid-range models (think the AK or AY series), availability is decent—our regular supply house has them in stock about 70% of the time. But for older or niche models, you might hit a wall. I recall in 2023 we needed a replacement for a 10-year-old unit. We called three suppliers. Two had no idea. The third had one on a backorder list. (This was back in March 2023, a few months after the HVAC industry saw some supply chain hiccups, to say the least.)
My advice: start with a parts lookup on the Tecumseh website using your model number. If that's a dead end, call a few regional distributors—don't just rely on the first quote. (Our typical process is to contact 3-4 vendors before buying.) We've found that pricing can vary by 25% for an identical OEM part. For NOS (new old stock) or remanufactured units, check smaller repair shops. They often have a stash.
Q: I see '36905 tecumseh air filter' as a required part. What is this, and can I substitute it?
That specific filter (the 36905) is a common inline filter for Tecumseh compressors, designed to catch debris and ensure the refrigerant stays clean. It's not a standard HVAC filter you'd buy at a hardware store. I wouldn't substitute it unless you have a very good reason and a compatibility chart in front of you.
(Standard disclaimer: Delta E color matching for parts isn't a thing here, but the concept is similar. Slight variations in material can cause sealing issues. Stick to the OEM spec if you're under warranty.)
We once tried a generic high-flow filter in 2022 because the OEM one was backordered for 6 weeks. It fit physically, but the pressure drop was different. We ran tests and found a minor performance loss—like a 5% drop in cooling efficiency (Source: our Q2 2022 maintenance logs). It worked in a pinch, but we replaced it with the correct 36905 as soon as it arrived. So: worth the wait, yes.
Q: Is it worth paying more for a guaranteed delivery date on a Tecumseh compressor?
In my experience, absolutely yes. This is the core of a lesson I learned the hard way. In March 2024, a critical condenser unit for our R&D lab failed. We needed a new Tecumseh compressor quickly or we'd have to cancel a $15,000 equipment test.
Option A was a vendor quoting $850 with a "probably 2-3 weeks" delivery. Option B was a vendor quoting $1,150 with a "guaranteed 10 business day" delivery. I chose A, thinking I'd save $300 and it'd be fine.
It took 4 weeks and 3 days. I had to explain to my VP why we lost $15,000 to save $300. The lesson? Uncertainty has a cost. The $300 in extra cost would have been an insurance premium against a $15,000 loss. Since then, for any time-sensitive equipment, I budget for guaranteed delivery. (I should add that we now have a standing agreement with our distributor for rush service on critical spare parts.)
Q: I need a 20x25x1 air filter. That's standard, right?
Pretty standard, yes. The 20x25x1 filter (also known as a standard furnace filter) is one of the most common MERV-rated sizes. You can get them everywhere, from hardware stores to online retailers. Prices range from about $8 for a fiberglass one to $20+ for a high-MERV pleated filter. (Source: major online filter retailers' quotes, December 2024.)
One tip I learned from our facilities manager: not all 20x25x1 filters are created equal. I noticed that our HVAC system's airflow dropped about 8% when we used a MERV 13 filter compared to a MERV 8 filter (Source: our Building Management System logs, Q1 2024). The higher the MERV rating, the more it restricts airflow. For our system, MERV 8 offers the best trade-off between filtration and energy cost. We buy in bulk—like 100 at a time—from a local supply house. It saves us about $1.50 per filter compared to retail (Oh, and they offer free shipping to our office because we spend over $500 annually).
Q: Can I use the same source for a Dewalt blower as I do for a Tecumseh compressor?
Probably not. A Dewalt blower is a power tool, typically distributed through tool retailers, home centers, and online marketplaces. A Tecumseh compressor is a stationary industrial refrigeration component, distributed through HVACR supply houses.
You might find a single vendor that supplies both, but it's rare. Our maintenance team uses a dedicated tool supplier for Dewalt products (they have a 5% discount for volume orders), and a separate HVAC distributor for compressors. Trying to combine them would likely lead to ordering delays or incorrect parts. (Don't hold me to this, but the tool market and the refrigeration parts market have very little overlap in sales channels.)
Speaking of Dewalt blowers, we bought four of them in late 2024 for maintenance. We compared prices across 3 vendors. The cheapest was about $140 (a generic online marketplace), but we went with a reputable tool dealer at $170. The $30 difference was worth it for the warranty and a consistent invoice. (Our accounting team hates dealing with marketplace invoices that look unprofessional.)
Q: I need a burner phone. Is this a standard purchasing question?
It's not common for my role, but it does come up. A "burner phone" is just a cheap, prepaid mobile phone. It's not a standard supply for our office, but I've sourced them for specific projects or field workers who need a temporary device.
Where to buy one is easy: almost any convenience store, electronics retailer (like Best Buy), or online (Amazon, Walmart) sells them. Prices vary from $20-$60 for the phone, plus a prepaid plan (e.g., $15-$30 for a month of service). The specific model number doesn't matter much; you're looking for a phone that works on a major carrier's network (AT&T, T-Mobile, Verizon).
The real question is: why do you need one? If it's for a specific project with a security or compliance requirement, your IT department likely has a preferred vendor or process. I'm not 100% sure, but I think our IT team uses a specific online provider for these devices. (I'd just ask them first.)
Final Takeaway (It's This One Thing)
Look, I've been doing this for 5 years now, processing over 600 orders annually across a dozen categories. The single biggest mistake I see—and made myself—is treating urgent procurement like normal procurement. For a 20x25x1 air filter for your office? Standard pricing and standard lead times are fine. For a tecumseh hermetic compressor that keeps your lab running? The cost of uncertainty is real. Pay for the guarantee. It's the cheapest insurance you'll ever buy.
