What is the difference between the Meross MTS300MA and the Nest Thermostat?

Both are Wi-Fi Matter thermostats with a CSA certificate on file. Meross configures the HVAC equipment in its own app; Google uses Google Home for the Nest Thermostat (2020). Our notes list 2.4 GHz Wi-Fi for the MTS300MA and 2.4 or 5 GHz for the Nest.

Does the Nest Thermostat (2020) work with Apple Home?

The Google quotes we hold name Google Home and Alexa for the Nest Thermostat (2020). It has a CSA Matter certificate, but confirm Apple Home with Google before you buy. Meross’s page names Apple Home for the MTS300MA.

Do these thermostats need a C wire?

Often. Meross requires a C wire or a compatible power arrangement. Google says some systems, including heating-only, cooling-only, zoned and heat-pump setups, need a C wire or the Nest Power Connector.

Meross MTS300MA vs Nest Thermostat (2020): Matter Thermostats

Meross MTS300MA vs Google Nest Thermostat (2020) for Matter: power and C-wire needs, setup apps, Wi-Fi bands, CSA certificates and platforms each maker names.

Two Wi-Fi Matter thermostats: one set up in the Meross app, one in Google Home

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Quick verdict

Both are Wi-Fi thermostats with a CSA Matter certificate on file, so neither needs a Thread border router. Meross says its app must configure your HVAC equipment first and names Apple Home and Alexa; Google Home sets up the Nest Thermostat (2020), and Google names Alexa and Google Home for it. Both can need a C wire, so check your system first.

Which one for your home

Your home runs on Google Home: Nest Thermostat (2020)
Google says Google Home is used for the Nest Thermostat’s setup and remote features.
You use Apple Home: Meross MTS300MA
Meross’s store page names Apple Home for the MTS300MA. The Google quotes we hold for the Nest Thermostat (2020) name Alexa and Google Home, so check Apple Home with Google.
You want a choice of 2.4 or 5 GHz Wi-Fi: Nest Thermostat (2020)
Our notes list Matter over Wi-Fi on 2.4 or 5 GHz for the Nest Thermostat (2020) and 2.4 GHz Wi-Fi for the MTS300MA.
Your system has no C wire: either one
Meross requires a C wire or a compatible power arrangement; Google says some systems, including heating-only, cooling-only, zoned and heat-pump setups, need a C wire or Nest Power Connector. Check yours.

Meross

Meross MTS300MA

A Wi-Fi thermostat for compatible North American heating and cooling systems. Choose it after checking your HVAC configuration and power supply, not simply because your existing…

Price: Price at retailer
Protocol: Wi-Fi, Matter
HomeKit: Yes
Alexa: Yes

Certification proof: CSA24507MAT43962-24 on the CSA registry

Check Amazon price Compare full catalog details

Google

Nest Thermostat (2020)

The non-Learning Nest Thermostat uses a programmed schedule. Its system support and accessory requirements differ from the 4th-gen Learning model, so compare the exact model before…

Price: Price at retailer
Protocol: Wi-Fi, Matter
HomeKit: Check exact controller support
Alexa: Yes

Certification proof: CSA23170MAT40683-50 on the CSA registry

Check Amazon price Compare full catalog details

Side by side

The first rows repeat each product page, read from its catalog record. The rest quote the maker or the record, with the source linked in each cell. Prices load in your browser only when a store price was checked in the last 48 hours or an Amazon price was retrieved in the last 24 hours.

What	Meross MTS300MA	Nest Thermostat (2020)
Current price	See price at Amazon	See price at Amazon
CSA Matter certificate	CSA24507MAT43962-24 (Sep 12, 2024)	CSA23170MAT40683-50 (Feb 14, 2023)
Matter network (its record)	Wi-Fi	Wi-Fi
Needs a Thread border router?	No; it joins your Wi-Fi	No; it joins your Wi-Fi
Platforms the maker names	Apple Home, Amazon Alexa	Amazon Alexa, Google Home
Stores we link	Amazon, Meross	Amazon, The Home Depot, Lowe's, Target, Google Store, Tech For Less, Abt Electronics, Dell, Newegg, Electronic Express
Power	24 V AC / 50–60 Hz, 1 A maximum output. Source	Compatible 24 V HVAC, 20–30 V AC supply. Source
C wire	A C wire or compatible power arrangement is required. Source	Heating-only, cooling-only, zoned and heat-pump systems, among others, may need a C wire or Nest Power Connector. Source
Wi-Fi	Matter over 2.4 GHz Wi-Fi. Source	Matter over Wi-Fi, 2.4 or 5 GHz. Source
Setup app	The Meross app is required for the first HVAC configuration. Source	Google Home is used for setup and remote features. Source

Which to choose when

Choose Meross MTS300MA when…

Choose the Meross MTS300MA when you use Apple Home or Alexa, which Meross names, and your 24 V system passes Meross’s checker. It carries CSA certificate CSA24507MAT43962-24 (September 2024), joins 2.4 GHz Wi-Fi, needs a C wire or compatible power, and the Meross app configures the equipment before Matter setup.

Choose Nest Thermostat (2020) when…

Choose the Nest Thermostat (2020) when your home runs on Google Home, which Google uses for its setup and remote features; Google also names Alexa. It carries CSA certificate CSA23170MAT40683-50 (February 2023), joins Wi-Fi on 2.4 or 5 GHz, and some heating-only, cooling-only, zoned and heat-pump systems need a C wire or Nest Power Connector.

What the catalog records show

The same answers each product page gives, from its catalog record and verified store links; a platform is named as confirmed only where the maker’s own site names it.

Meross MTS300MA

Is the Meross MTS300MA Matter certified?: Yes. MatterCatalog matches it to CSA Matter certificate CSA24507MAT43962-24, certified Sep 12, 2024.
Which smart home platforms does the Meross MTS300MA work with?: The maker’s own site names Apple Home and Amazon Alexa. Unverified: its catalog record also lists Google Home, with no maker quote on file; check exact controller support. Controls can differ from app to app.
Does the Meross MTS300MA use Thread or Wi-Fi?: Wi-Fi. Its catalog record lists Wi-Fi, so it joins your Wi-Fi network and does not need a Thread border router. You still need your platform’s Matter controller.
Where can I buy the Meross MTS300MA?: MatterCatalog has verified store links for it at Amazon and Meross. Check the current price, model and pack size at the store.
What the maker says you need: A C wire or compatible power arrangement is required. Use Meross’s system checker and have an HVAC professional confirm the installation. The Meross app is required for initial HVAC configuration. Matter setup alone does not configure the heating and cooling equipment. A compatible Matter controller for your chosen platform; advanced scheduling and energy features may remain in the Meross app.
Model and package: Amazon MTS300 White, 1 unit; no C-wire adapter listed. Official store SKU MTS300MA-US, 1 unit. North America only; confirm any adapter separately.

Nest Thermostat (2020)

Is the Nest Thermostat (2020) Matter certified?: Yes. MatterCatalog matches it to CSA Matter certificate CSA23170MAT40683-50, certified Feb 14, 2023.
Which smart home platforms does the Nest Thermostat (2020) work with?: The maker’s own site names Amazon Alexa and Google Home. Unverified: its catalog record also lists Apple Home, with no maker quote on file; check exact controller support. Controls can differ from app to app.
Does the Nest Thermostat (2020) use Thread or Wi-Fi?: Wi-Fi. Its catalog record lists Wi-Fi, so it joins your Wi-Fi network and does not need a Thread border router. You still need your platform’s Matter controller.
Where can I buy the Nest Thermostat (2020)?: MatterCatalog has verified store links for it at Amazon, The Home Depot, Lowe's, Target, Google Store, Tech For Less, Abt Electronics, Dell, Newegg and Electronic Express. Check the current price, model and pack size at the store.
What the maker says you need: Check heating/cooling stages with Google. Some systems, including heating-only, cooling-only, zoned and heat-pump configurations, need a C wire or Nest Power Connector. Matter support arrived in firmware 1.3–10 in June 2023. Check that the unit is updated; Google lists later maintenance releases. Google Home is used for setup and remote features. Check the Matter controller requirements for other platforms.
Model and package: Snow · Nest Thermostat (2020). This is not the Nest Learning Thermostat and does not include the Learning model’s remote sensor bundle. Confirm the Snow finish and included parts at checkout.

What they share

Both have a CSA Matter certificate on file.
Both join your Wi-Fi network, so neither needs a Thread border router.
Both makers name Amazon Alexa.
Both have US store links on their product pages.

Product, category and brand pages

Best Matter Smart Thermostats 2026 →Nest Learning Thermostat (4th gen) vs Nest Thermostat (2020) →Meross MTS300MA vs Mysa: Wi-Fi Matter Thermostats Compared →

Before you buy

HVAC fit: run Meross’s system checker or Google’s compatibility checker for your exact system.
Power: check for a C wire. The MTS300MA needs one or a compatible power arrangement; some systems need one or a Nest Power Connector for the Nest.
Firmware: Google says Matter support arrived in firmware 1.3–10 in June 2023; check that the Nest is updated.
Model: the Nest Thermostat (2020) is not the Nest Learning Thermostat; check the model and finish at checkout.

Common questions

What is the difference between the Meross MTS300MA and the Nest Thermostat?: Both are Wi-Fi Matter thermostats with a CSA certificate on file. Meross configures the HVAC equipment in its own app; Google uses Google Home for the Nest Thermostat (2020). Our notes list 2.4 GHz Wi-Fi for the MTS300MA and 2.4 or 5 GHz for the Nest.
Does the Nest Thermostat (2020) work with Apple Home?: The Google quotes we hold name Google Home and Alexa for the Nest Thermostat (2020). It has a CSA Matter certificate, but confirm Apple Home with Google before you buy. Meross’s page names Apple Home for the MTS300MA.
Do these thermostats need a C wire?: Often. Meross requires a C wire or a compatible power arrangement. Google says some systems, including heating-only, cooling-only, zoned and heat-pump setups, need a C wire or the Nest Power Connector.

How this page was made

We have not performed hands-on testing. This page is built from MatterCatalog’s catalog records: each product’s CSA certificate and its scope, the network and platforms its record lists, the maker’s setup requirements and the stores with a verified link. It does not rank performance, reliability or price; check the current price, model and pack size at the store. Editorial policy

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