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Shreyas Sudhakar

@shreyassudhakar.com

2.5K followers 1.6K following 1.5K posts

Writing about heat pumps at heatpumped.org Installing heat pumps at vayu.pro Former YC founder and rocket propulsion engineer heatpumped.org/subscribe

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Shreyas Sudhakar @shreyassudhakar.com · Feb 25

I’m thrilled to announce @vayu.pro, my new heat pump installation company! 🧵

The Vayu team installing a heat pump system in the San Francisco Bay Area, replacing the home's existing gas wall furnace.

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Shreyas Sudhakar @shreyassudhakar.com · 1h

Maybe it would be better to call it a #2WayAC? www.heatpumped.org/p/what-s-in-...

A meme that says" Sir, the neighbors just installed a heat pump but they keep calling it a "magic reverse fridge"

Shreyas Sudhakar @shreyassudhakar.com · 1h

www.heatpumped.org/p/what-s-in-...

Heat Pumps have a branding problem, but ACs don't

Rebranding Heat Pumps to 2-Way ACs will help increase adoption and awareness among homeowners. It's a term that's starting to catch on, and one we can start using today.

www.heatpumped.org

Shreyas Sudhakar @shreyassudhakar.com · 19h

I haven’t seen a starter pack in a while! Here is one of my favorites - lots of smart climate voices go.bsky.app/T3hLCNv

Erin Sherman 🌱 @wearegonnafindout.bsky.social · 19h

I don't think the xitter exodus has found me but just as a reminder, there is a starter pack of accounts that post about North American native plants. These are mostly not pro naturalists or landscapers or horticulturists, just humans who are really into plants. 🌱 go.bsky.app/MWY25jQ

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Reposted by Shreyas Sudhakar

Ryan Katz-Rosene, PhD @ryankatzrosene.bsky.social · 1d

“When crops are burned for fuel, new land can be needed to grow new crops for food or fuel. This can lead to indirect land clearance and deforestation. Staggeringly, biofuels globally therefore today emit 16% more CO₂ emissions than the fossil fuels they replace.”

From: https://www.transportenvironment.org/articles/crop30-why-burning-food-for-land-hungry-biofuels-is-fueling-the-climate-crisis

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Shreyas Sudhakar @shreyassudhakar.com · 2d

Came here to say the same thing. Nearly 60% increase in 4 years is wild

Reposted by Shreyas Sudhakar

Governor Gavin Newsom @governor.ca.gov · 3d

A record 29% — nearly a third! — of all new cars purchased in California during July, August, and September were zero-emission vehicles.

DC may be fine with selling out American innovation to China, but California will keep charging ahead toward cleaner air for our communities.

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Shreyas Sudhakar @shreyassudhakar.com · 4d

Will have to check it out. Sounds like the difference between this and a CCA is that this handles the distribution side too?

Reposted by Shreyas Sudhakar

Nate the House Whisperer @energysmartwv.bsky.social · 6d

Great 50 year old #heatpump ad!

Don't heat like a caveman!

This is good mainstream messaging, we need much more like this, not early adopter or green focused.

#energysky #2wayAC 🔌💡

texas Janesaw massacre @idlerat.bsky.social · 7d

general electric ad for a heat pump from 1975 Readers Digest!

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Reposted by Shreyas Sudhakar

Jack Todd @jacktodd.bsky.social · 6d

We had a heat pump installed one year ago in place of an oil burning furnace.
It's quieter and more efficient, keeps temp and humidity more consistent.
Hydro electric bill the same so the savings is entirely in the fuel oil bill - $3500 a year.
Pays for itself in four years.

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Shreyas Sudhakar @shreyassudhakar.com · 7d

Likewise. I'm down to do another!!

Shreyas Sudhakar @shreyassudhakar.com · 7d

We are CA based, but the role can be fully remote! (Preferably in the US, though)

Shreyas Sudhakar @shreyassudhakar.com · 7d

I need your help sending another gas furnace to the junkyard - @vayu.pro is looking for a part-time project manager to help us grow!

Zero prior knowledge needed.

If you’re organized, creative, empathetic, and want to break into a climate career, you’ll thrive.

Know anyone who fits the bill?

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Shreyas Sudhakar @shreyassudhakar.com · 7d

Regarding brands, you might find this article I wrote last year helpful: www.heatpumped.org/p/web-confus...

A Wolf in Sheep's Clothing

White labeling and partnerships in the HVAC industry mean the name on the sticker might not be the factory that made your equipment

www.heatpumped.org

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Shreyas Sudhakar @shreyassudhakar.com · 7d

Sounds like a great fit! You should budget somewhere between $5-9k installed (varies a lot based on your location). Should be able to get up to $2k federal tax credit & potentially local rebates. Find a contractor you trust, brand doesn’t matter much as mini splits are fairly commoditized.

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Shreyas Sudhakar @shreyassudhakar.com · 7d

Anytime!

Shreyas Sudhakar @shreyassudhakar.com · 7d

Ultimately…. I really think working with a quality contractor installing equipment they’re familiar with is going to lead to the best results. So I don’t want to send you down a rabbit hole!

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Shreyas Sudhakar @shreyassudhakar.com · 7d

www.facebook.com/100083346640...

Midea Heating & Cooling North America

On October 11th, Midea inaugurated its latest showroom in Yonkers, New York – offering a full spectrum of heat pump technologies designed to fit every home and need. This new location mirrors...

www.facebook.com

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Shreyas Sudhakar @shreyassudhakar.com · 7d

Smart thinking :) The challenge is going to be finding a contractor that installs it. Midea relies heavily on their white label partners for distribution so has a really limited footprint under their own brand. You’re in NY right? I did some light googling and this might point you the right dir

Shreyas Sudhakar @shreyassudhakar.com · 7d

(the 1401 is that super old school one: shop.rfwel.com/carrier-ksac...)

Unfortunately Carrier/Midea thermostats and Midea branded thermostats aren't always interchangeable. So your best path if you go this route is probably just to go with the Ecobee

Carrier KSACN1401AAA Wired Remote Controller

Shop now for all your quality, Thermostats, HVAC Remote Controllers, Antennas, Power Accessories, Radio Equipment. Free Shipping and Support. Over 15 Years of Experience.

shop.rfwel.com

Shreyas Sudhakar @shreyassudhakar.com · 7d

This is getting super nerdy, but pulled from the install manual. Your contractor probably (should) be installing with Scenario 1. That lets the indoor & outdoor units talk, but the thermostat just sends on/off signals.

Scenario 2 would be full communicating, but they reference the 1401 thermostat

Shreyas Sudhakar @shreyassudhakar.com · 7d

Midea's rolled out a nice smart communicating thermostat now but I'm not sure if that has made its way to Carrier's offering (not seeing anything similar on their lineup). The old Midea/Carrier thermostats were pretty horrendous. The new ones are a huge improvement.

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Shreyas Sudhakar @shreyassudhakar.com · 7d

The equipment can be full communicating (indoor unit/outdoor unit/thermostat) all talking to each other, or wired as a traditional 24V using an Ecobee/Nest/etc. Full communicating will give the best efficiency but at least on the last generation, controls for that product line was pretty crummy.

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Shreyas Sudhakar @shreyassudhakar.com · 7d

You might find this interesting: www.linkedin.com/posts/shreya...

Let's talk about the HVAC industry's dirty little secret. Between a heat pump being made in the factory and it being installed at your house, there's lots of layers. (Yes Shrek, just lik...

Let's talk about the HVAC industry's dirty little secret. Between a heat pump being made in the factory and it being installed at your house, there's lots of layers. (Yes Shrek, just like that) Fir...

www.linkedin.com

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Shreyas Sudhakar @shreyassudhakar.com · 7d

The 37MUHA/45MUAA is rebranded Midea equipment! Solid stuff. We install very similar equipment often, it's marketed under a whole slew of different brands. If you go that route, you are probably paying a big premium for Carrier slapping their sticker on, but it should treat you well!

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Shreyas Sudhakar @shreyassudhakar.com · 7d

In the US, most ACs are 1-Way ACs. They don't have the heating button! Historically, buildings have been heated with natural gas/oil.

So most use two separate devices - one to cool, one to heat. The 1-way ACs are missing the reversing valve allowing them to cool.

Thus the push toward heat pumps!