â  Most patients have lacrimation and true photophobia (shining a light into the unaffected eye causes pain in the affected eye when the affected eye is shut). UV = ultraviolet; V 1 = ophthalmic division of the trigeminal nerve.
1 Residential electricity bills in MO. 2  The average monthly residential electricity bill in Missouri is $108, which ranks 18th in the nation and is 0.93% greater than the national average of $107 per month.
For this situation, using average residential electricity costs, the monthly cost to run the HRV/ERV would be approximately $12. The average power draw of an HRV/ERV is 150 watts. If it runs 24 hours a day for 30 days each month, then the monthly energy consumption would be. 150 W Ã 24 hrs./day Ã 30 days/mo.