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Heat pump not heating efficiently in cold weather
Mike R. (G2 Certified) 2 hours ago Troubleshooting
šŸ’¬ 8 replies šŸ‘ļø 45 views
I have a client with a heat pump that's struggling to maintain temperature when it gets below -10Ā°C. The backup electric heat is kicking in too often. Has anyone dealt with similar issues? Looking for troubleshooting steps...
Best resources for studying CSA B149.1?
Sarah K. (Student) 5 hours ago Education
šŸ’¬ 12 replies šŸ‘ļø 78 views
I'm preparing for my G2 exam and finding the gas code challenging. What study methods worked best for you? Are there any specific sections I should focus on more than others?
2024 Code Updates - What's Changed?
Tom W. (Inspector) 1 day ago Codes
šŸ’¬ 15 replies šŸ‘ļø 156 views
Let's discuss the major updates in the 2024 gas codes. I've compiled a list of key changes that affect field work. What changes have you noticed impacting your daily operations?
Recommendations for digital manifold gauges
Alex P. (Technician) 2 days ago Equipment
šŸ’¬ 6 replies šŸ‘ļø 89 views
Looking to upgrade from analog gauges to digital. What brands and models do you recommend? Main priorities are accuracy, durability, and ease of use in the field.

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Mike T. G2 Certified
2 hours ago
Just passed my G2 exam using the practice simulator here! The questions were very similar to the real exam. Thanks LARK Labs! šŸŽ‰
Sarah K. Instructor
1 hour ago
Congratulations Mike! That's exactly why we built these tools. Keep up the great work! šŸ‘
Alex R. Student
4 hours ago
Can someone explain the difference between superheat and subcooling? I'm studying for my G2 and getting confused. šŸ¤”
Tom W. Expert
3 hours ago
Superheat is how much hotter the refrigerant vapor is above its saturation temperature. Subcooling is how much cooler the liquid refrigerant is below its saturation temperature. Both are crucial for proper system operation! šŸŒ”ļø
Lisa M. Technician
6 hours ago
Quick tip: When sizing ductwork, always account for fittings and transitions. They add significant pressure drop that many people forget about. šŸŒŖļø