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Headaches, fatigue, or brain fog indoors
When to involve a professional
It’s time to call a qualified specialist if:
Symptoms improve when you leave the house
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Air feels stale even with a good air filter
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You have gas appliances (furnace, water heater, stove, fireplace)
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Opening windows helps — but only temporarily
Some ventilation and combustion issues are invisible and potentially dangerous.
This is not a DIY problem.
What to do next
Contact a clean air or HVAC professional experienced with ERV/HRV systems
Ask for an evaluation of air exchange and combustion safety
Get guidance on the right ventilation approach for your home
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Investigate and install a whole-home air purification system – Your trusted HVAC professional is a good place to start
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