--- product_id: 154778224 title: "300 Combustion Analyzer HVAC Kit - Residential Combustion Leak Tester for Flue Gas, Draft, Differential Pressure, Ambient CO Levels of Heating Systems - Natural Gas Leak Tester with Spare Probe" brand: "testo" price: "$3239.22" currency: USD in_stock: true category: "Testo" url: https://www.desertcart.us/products/154778224-300-combustion-analyzer-hvac-kit-residential-combustion-leak-tester-flue store_origin: US region: United States of America --- # 6-year sensor lifespan 5.0" HD smart touch display Measures flue gas & draft precisely 300 Combustion Analyzer HVAC Kit - Residential Combustion Leak Tester for Flue Gas, Draft, Differential Pressure, Ambient CO Levels of Heating Systems - Natural Gas Leak Tester with Spare Probe **Brand:** testo **Price:** $3239.22 **Availability:** ✅ In Stock ## Summary > 🔥 Stay ahead of combustion leaks with precision and power! ## Quick Answers - **What is this?** 300 Combustion Analyzer HVAC Kit - Residential Combustion Leak Tester for Flue Gas, Draft, Differential Pressure, Ambient CO Levels of Heating Systems - Natural Gas Leak Tester with Spare Probe by testo - **How much does it cost?** $3239.22 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/154778224-300-combustion-analyzer-hvac-kit-residential-combustion-leak-tester-flue) ## Best For - testo enthusiasts ## Why This Product - Trusted testo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Complete Pro Kit:** Includes spare probe, dirt filters, rugged case, and easyHeat software for seamless workflow integration. - • **Data-Driven Decisions:** Store up to 1,000,000 readings and export reports via email—perfect for on-the-go analysis. - • **Hands-Free Efficiency:** Strong rear magnets enable secure, hands-free operation for multitasking pros. - • **Precision at Your Fingertips:** Instantly measure CO, O2, temperature, and pressure with one intuitive device. - • **Long-Lasting Sensor Reliability:** Up to 6 years of ultra-sensitive CO and O2 sensor performance—less downtime, more trust. ## Overview The testo 300 Combustion Analyzer HVAC Kit is a professional-grade tool designed for residential heating system diagnostics. It accurately measures carbon monoxide, oxygen levels, temperature, draft, and differential pressure using highly sensitive sensors with a lifespan of up to 6 years. Featuring a large 5.0" HD touch display and hands-free operation via strong magnets, it stores up to 1 million readings and supports easy data export. The kit includes essential accessories like spare probes, dirt filters, a rugged carrying case, and easyHeat software, making it a comprehensive solution for HVAC professionals seeking reliable, efficient combustion analysis. ## Description Testo 300 kit Residential - Efficient and precise combustion measurement The combustion and emissions analyzer by testo offers dependable measurements of carbon monoxide, flue gas 02, COlow, NO, NOlow and draft, as well as temperature and differential pressure of heating systems. With its high-quality sensors and rugged housing, the testo 300 provides reliable and consistent performance. Store and see all data on one instrument - the large HD display with smart touch offers an extremely intuitive operation. Quickly view reports and send data via e-mail for up to 1,000,000 measuring values. Technical Data: Dimensions: 9.6 (including probe connection) x 3.9 x 2.3 (LxWxH) / 244 (including probe connection) x 98 x 59 (LxWxH) Weight: approximately 28.2 oz. / approximately 800 g Product color: black/orange Display type: 5.0"" touch display, HD 1280*720 pixels, IPS (160 k) Battery life: 10 hours Scope of Delivery: testo 300 combustion analyzer with 02 and CO sensor, power adapter, mains unit, basic flue gas probe, spare dirt filters, hardshell transport case and easyHeat PC software (free download) ## Features - Efficient: The combustion analyzer hvac reliably measures the carbon monoxide and O2 level of furnaces and boilers, as well as temperature, draft and differential pressure - Durable: The combustion analyzer and co meter is equipped with an extremely sensitive CO and O2 sensor with up to 6 years of life expectancy and a measuring range up to 4,000 ppm - Easy application: Start measuring on your combustion leak tester from standby mode at the touch of a button. Extra strong magnets at the back of the meter enable a hands free and secure measuring operation - Intuitive: Thanks to the large HD smart touch display of the co meter with a clearly structured measurement menu, the flue gas detector offers all measurements at one glance - Complete Set: The combustion gas leak detector set includes long life O2 and CO sensor, mains unit, basic flue gas probe, spare dirt filters, rugged hardshell case and easyHeat software ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07W5WZVW9 | | Alarm | Audible | | Best Sellers Rank | #251,126 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #299 in Indoor Air Quality Meters | | Brand | Testo | | Built-In Media | logic-analyzers | | Color | Black | | Customer Reviews | 4.2 4.2 out of 5 stars (23) | | Global Trade Identification Number | 04029547021879 | | Item Dimensions D x W x H | 30"D x 8"W x 6"H | | Item Weight | 1 Pounds | | Manufacturer | Testo | | Manufacturer Warranty Description | 2 years | | Mfr Part Number | 0564 3002 82 | | Model Number | B07W5WZVW9 | | Number of Items | 1 | | Operating Humidity | 95 percent | | Power Source | Battery Powered | | Product Style | Standard Set | | Unit Count | 1.0 Count | ## Product Details - **Alarm:** Audible - **Brand:** Testo - **Color:** Black - **Global Trade Identification Number:** 04029547021879 - **Item Weight:** 1 Pounds - **Operating Humidity:** 95 percent - **Power Source:** Battery Powered - **Product Dimensions:** 30"D x 8"W x 6"H - **Style:** Standard Set - **Unit Count:** 1.0 Count ## Images ![300 Combustion Analyzer HVAC Kit - Residential Combustion Leak Tester for Flue Gas, Draft, Differential Pressure, Ambient CO Levels of Heating Systems - Natural Gas Leak Tester with Spare Probe - Image 1](https://m.media-amazon.com/images/I/711suW1EWjL.jpg) ## Available Options This product comes in different **Pattern, Size, Style** options. ## Frequently Bought Together - testo 300 I Residential and Commercial Combustion Analyzer Kit with optional bluetooth printer I CO Meter for flue gas, draft, differential pressure and ambient CO levels of heating systems - testo 510 Digital Manometer I Dual-Port Differential Pressure Meter for air Conditioning Systems and Ventilation ducts --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/154778224-300-combustion-analyzer-hvac-kit-residential-combustion-leak-tester-flue](https://www.desertcart.us/products/154778224-300-combustion-analyzer-hvac-kit-residential-combustion-leak-tester-flue) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-27*